Microbial Threats and Voyages

A research-based on the above topic:

In this paper, we’re gonna talk about Europe and what all this small continent caused.

Most of the pandemics in the past had been caused by the diseases originating in Europe. It is no surprise here. More than a billion people have died due to these diseases. Since Europeans have been colonizers in the past, they had spread their diseases to all over the world.

Let us learn about the diseases spread by this continent:

THE BLACK DEATH

  • The Black Death plague which was originally originated in China dominated Europe from 1347 to 1665. ​
  • It reached its peak in the years 1346-1356 where estimates place that around 75 million-100 million.​
  • Almost one-third of Europe perished.​

SMALL POX AND MEASLES:

  • Small Pox and Measles were the diseases that were introduced to the native population of North America brought by the Europeans.​
  • It reduce the number of native Americas by as much as 95%, killing 20 million.​
  • It was from 1509-1529

CHOLERA:

  • The third global cholera pandemic of 1852 – 1866 began on the Ganges River Delta, spreading along trade routes throughout India, and from there to Russia, China, France, England, and the United States. ​
  • In 1853–54, an epidemic of cholera broke out in London, where it claimed over 10,000 lives.​

Thank you!

DENSITY

Ever wondered why a small metal coin sinks and a big ship doesn’t?​

Oh, it’s all based on the concept of density. And the whole idea of density comes from the concept of the Archimedes principle. It is because of this principle we know why big ships float on the water, and do not sink.​

​So, what is the Archimedes principle?

Archimedes’ principle, physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, stating that any body completely or partially submerged in a fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force, the magnitude of which is equal to the weight of the fluid displaced by the body.

What is density?​

Density is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume. An object made from a comparatively dense material (such as iron) will have less volume than an object of equal mass made from some less dense substance (such as water).

FLOATATION:

​When a body of density ρ and volume is completely immersed in a liquid of density, the following two forces act on the body:​

1. Weight of body, W=Vρg acting vertically through the center of the gravity.​

2. Buoyant force or upward thrust, FB = V*liquid density*g equal to the weight of the liquid displaced, acting vertically upwards through the center of the buoyancy.​

​So, in simple words we can define the Archimedes principle as: when a body is wholly or partially submerged in a liquid, buoyant force acts on it thus reducing the weight of the object which is equal to the weight of the liquid displaced.

Depending upon these formulas, there are three cases:​

  1. W > FB , the body will sink to the bottom of the liquid. This happens when the density of solid is greater than the density of the liquid.​

2. W < FB , the body will rise above the surface of the liquid to such an extent that the weight of the liquid displaced by the immersed part of the body ( i.e. upward thrust ) becomes equal to the weight of the body. The body will then float. In this case, the density of the body is lesser than the density of the liquid.​

3. W = FB , the body is at rest anywhere in the liquid. The body will float if its whole volume is just immersed in the liquid. In this case the density of the body is equal to the density of liquid.​

Therefore from the above conditions, we now know why big ships float. This is because of density. The density of the ship is much lesser or equal to that of the water.​

Thank you!

My Role Model

“You have to dream before your dreams can come true.”- APJ Abdul Kalam

 

A role model is a person who inspires you to be like him or her. And almost everyone has a role model. Moreover, a role model can be anyone from a celebrity to a politician to your family member.

 

The missile man of India, Dr. APJ Abdul Kalam is my role model. It is not only because he has achieved great things in life and became the President of India. He is my role model because of his dedication of his entire life to the country and its people, especially children.

 

Dr. APJ Abdul Kalam worked his entire life and achieved many great things in life. Becoming the President of India is an example. But there is one more thing which is of great importance. It’s that after his retirement from the Presidential post he started teaching because it was his love to children. Now that’s passion!

 

Thus, I feel that a person who understand children and has achieved everything through hard work is a person to look up to in life.

Thank You!!!

My best birthday party

Birthdays come every year but some are more special than others.

My best birthday was at age 7.
It was my best birthday because I got the best toys as surprise presents and the best chocolate cake I had and all my best friends were there.I and my best friends had so much fun, we had the cake and my favourite food:fried chicken.It was the best,I played with all my new toys and had so much fun.It was unforgettable and the best birthday I had.

Why Recycling should be Compulsory

Do YOU know that the average person generates over 4 pounds of trash every SINGLE day? Another fact is that tourism contributes to more than 5 percent of global greenhouse gas emission.

I believe Recycling should be compulsory for many reasons. It protects the environment, reduces landfills, and saves resources.

Recycling reduces landfills because if you recycle, those materials will not go into the landfill. Landfills are very bad to the overall environment, impacting other essential resources like air, water, and animals. Do you know that It takes 500 years for average-sized plastic water bottles to fully decompose? They can cause toxic chemical’s in our water supply and also causes pollutes the air with methane. Imagine drinking toxic chemicals because of the landfill. 

Recycling also protects the environment. Recycling reduces the need for extracting (mining, quarrying, and logging), refining, and processing raw materials all of which create substantial air and water pollution. Habitat destruction and global warming are some of the effects caused by deforestation. Recycling reduces the need for raw materials so that the rainforests can be preserved. Huge amounts of energy are used when making products from raw materials. It also saves energy. When you use raw materials you use a lot of energy.

Recycling requires much less energy and therefore helps to preserve natural resources. Do you know that a can of aluminum has a 20x benefit if made from recycled material versus using raw material? Recycling reduces the need to get new raw material resources like wood, metal. It also reduces water and air pollution because we pollute the air trying to get resources and recycling would hugely reduce this. Recycling saves resources like water, wood, coal, and many more.

To conclude, Recycling is a WIN-WIN for everyone. There are no doubts that it saves on resources while helping prevent pollution. We, humans need to evaluate each and every task that we do, with an emphasis on recycling whether you live in a place is or you are a tourist. As the human race is growing, the criticality of this is increasing by the day. !!!

What Would Be India’s History If There Were No British Invasion?

WE HAD BEEN THERE BEFORE. A time so cruel for us. A time when we endured the torture inflicted upon us. Forced to part away from our identity, freedom and love. But what would be India’s history if Aurangzeb had not issued the farman?

Well for starters, India would have discovered the route to England via the Cape of Good Hope. They probably would have voyagers conducting expeditions to search for new lands to trade. Britain at that time did not that much to sell. India would have taken Britain’s market on storm, because of the spices and variety of natural resources. This would have made India powerful than ever.

During that time, silver was on great demand for creating swords, utensils etc. As India, where silver had not been discovered by that time would probably be exported from Britain. This would be a one-way win for India as Britain would have been heavily dependent on India for almost everything.

This would have caused a vast cultural change among these two countries, predominantly in Britain as India (in this scenario) has more power in Britain. Who knows, maybe Hindi was the official language of Britain or India would have been the most powerful country now?

We have seen the cultural, economic and political changes if India had captured Britain. But what about the conditions in India? Well, India would have been a much powerful country then ever before. It would have great education system, proper housing for its citizen and oh, the monarch concept.

There wouldn’t have been any riots or even protest because India was its own country! There would have been no Swadeshi Movement, Jallianwala Bagh massacre or even Independence!

In a nutshell, India would have been a country of its own will; just ruled by different dynasties. It would have been called the world’s most powerful country. People wouldn’t have to live under the slavery. Oh, I wish this would have had happened!

How Has The Pandemic Shaped My Life

Once Albert Einstein quoted “The only source of knowledge is experience.” It’s true. So, here am I sharing my experiences under lockdown. Or in simple words; how has the pandemic changed my life.

Let me remind you that, this speech is a middle schooler point of view.

The main change that the pandemic inflicted upon my life is that now I don’t have anyone to socialize too. In this context, I mean to meet and talk to others physically. Right in front of them.

Sure, apps like Zoom and Google Meet do provide us a platform to meet and chat with our relatives and friends. But do not forget that humans are social creatures. It’s our instinct to communicate. After all, this whole world solely depends on communication. I’m now just adjusted to communication virtually.

Though we meet virtually, the idea of meeting people physically is so appealing. I don’t know, but there’s one thing I’ve understood is that I can’t live without physical communication. What about you?

For me, as a student, the biggest change in my life is related to academics. Any guesses, I promise it isn’t too hard.

Yes, you got right. It is indeed online classes.

Online classes in reality are way different than the physical traditional one that we used to attend. School.

All my life, I’d always fantasized about what would it be like if I were to attend online classes instead of schools. I wished to attain the experience of online classes. It always seemed cool to me, but now it doesn’t. Perhaps because I may have gotten bored of it.

First, the lack of physical communication. I strongly believe that learning in a school, in the same room with the teacher and student present is better than that of online school. The reason behind is because you get to engage with your classmates and the teacher can keep a check on you.

You learn much better and quicker than the online classes.

Second, internet issues. They frustrate me. I mean, how are you supposed to learn if your call hangs, or the teacher isn’t audible to you. At least, traditional schools had no disruption.

Last but not the least, in school I had the coordination of mind, eyes and hand but being online I’m losing them all. I’m a bit lethargic while writing.

Besides, there’s one more aspect that I want to bring to the audience we get distracted. When I often study on the laptop which connected to the internet, you frequently get interrupted and get urged by the other medias to search for unrequired information.

This has affected my way of learning.

As any other human, I’m now forced to wear mask, gloves and what not. Because the COVID-19 is thought to spread through contact.  I’m strictly forbidden from going outside, or in other words in lock-down. Not only I miss my previous way of life I detest the pandemic. Its too hard to maintain social distancing, wearing masks etc.

Wearing masks and maintaining social distancing is often now symbolic to a bird within a cage. We all want freedom. It can be in various ways, but for now is to go out safely without any precautions. You could possible call me ignorant and vain, but we all want to free of them, don’t we?

To sum up, I would like to go back to the old ways of my life; more of physical socialising, schools and doubt clearing. In the end, I understand that its impossible to do the above until the vaccine is out!

Thank you.

My Teacher’s Day Speech

A very Good Morning to one and all present here.

 

Today, on the auspicious day of Teacher’s day, I am here to deliver a speech on the Importance of Teachers.

 

Now let me tell you a story. One day, a teacher asked her students about their ambition. Many students said Doctor, Engineer, etc. But one student said, I want to be a teacher.” The teacher asked “Why?” He gave his answer “Behind every doctor, engineer or any other occupation, there is a teacher” The teacher, her eyes filled with tears, hugged the boy.

 

What that little boy said was true. Education is essential to be someone in the society and our dear hardworking teachers are the mediators. Whether the teacher is a male or female, teaches Maths or Science, is strict or lenient, a teacher is a teacher and that is a universal truth.

 

Teachers are a special blessing from God to us. They are the ones who build a good nation and make the world a better place. A teacher teaches us the importance of a pen over that of a sword. They are like the building blocks of society who educate people and make them better human beings.

 

A teacher is one who does not merely focus on our academic performance but our overall development. Only then can a student truly grow. Thus, good teachers will understand their student’s problems and try to deal with them correctly. They make the student feel like they always have someone to talk to if they are alone.

 

To conclude my speech, teachers are our friend, parent, role model, guardian and much more and we must always remember the lessons taught by them.

Thank You and have a Happy Teacher's Day!!

Good things about COVID

I’m quite sure that everybody here knows about COVID and all the bad things that come with it. You have to stay home, you can’t shake hands, you have to wear a mask if you want to go outside, you have to frequently wash your hands, people are losing their jobs because of the lockdown, and more! The majority of your time thinking about COVID would be about the bad things from this virus. But there are many good things about it as well! These good things are going to help us in the long-term. In this blog, I’ll focus on the two best things that have come from this pandemic. 

One of the best long-term benefits of this virus is the reduction in pollution. This was probably the most obvious. Traffic from cars, flights, trains, and other forms of transportation has largely reduced. This is in turn has greatly reduced the amount of pollution. In China, for example, it’s estimated that at least 78,000 would’ve died due to pollution. But instead, 4600 people died due to COVID. This is happening in many other places too. Within the first week of lockdown, India’s air pollution has dropped to the lowest it has been in the last 20 years. When my mother went to India in January, the airport runway was barely visible when her plane landed in Dehli. But now, Delhi has clear skies. People in Dehli can now breathe fresh air and have a much lower chance of a variety of diseases that are much more dangerous than COVID.

Another long-term effect of COVID is going to be the digitization of everything. People are starting to see that it is largely possible to do the majority of IT jobs from home. Google, for example, is going to let their workers stay home until July 2021. They might one day conclude that there is no need to go to the office the majority of the time. This going to reduce the amount of pollution(people will be commuting less) and it’s going to save a lot of money. This will in turn allow for Google and other IT companies to allocate less money to office costs and more money for innovation. 

Overall, COVID has done a lot of bad things for everybody around the world. But benefits like this are a nice silver lining to an otherwise terrible situation. 

How Does the Media Influences Us?

A few weeks back, I was watching a debate with my family on television. It was about an ongoing disputed case over the death of a famous Bollywood actor. And the debate was toxic; insults were being spewed at each other, people were politicizing the issue and henceforth on. But what disturbed me, was that the anchor was a very biased person. I’m not siding with anyone here, but I believe that a matter has two sides. And as an anchor, it was his responsibility to hear both sides. After reading the comments, I was even more shocked to learn that people sided with a biased view; and here I learned the power of media. How it can truly influence us.

So here am I, Reneeka Kumar, to present my views and to educate the power of media. How can you be influenced by the media?

Before I start discussing my beliefs, primary enlightenment to media is necessary. So, what is the media? Well, your television is the media. Your local newspaper is the media. Even, the internet is the media. In simple words, the media is a means of communication. Now, now, now; you must be wondering: “Reneeka, how possibly in this world, can media influence us?”

Chill, I’m getting there.

Media is a powerful tool that can be used to change our way of thinking, our perception of the world. It’s absurd, and no one’s immune to it. In reality, the people who are “immune” to media are more prone to the influence.

We have two faces of media, in other words, pros and cons. The good and the ugly. Let me start with the positive faction of media, the pro.

The positive effect of media: for starters, it has made the current generation aware of the issues going all around the world. As rightly said by Dave Wallis, “Don’t use social media to impress people; use it to impact people.” And that’s what the media is doing!

On news channels and social networking sites like Twitter and Youtube, you can get to see videos and read interviews about influential people. See videos about the extra-ordinary people who made a positive impact on our society. Those who motivate us to become a better person, a better generation.

You also, learn about the current issues of the world. Poverty, diseases, national security risk, peace, harmful usage of drugs, etc. Because of this, people are now more aware of the world and can do something about it. In a way or another, it’s contributing towards a bright future.

You see, how can media truly impact our views? Influence and make us a better person with an open mind? But, sadly, this doesn’t happen all the time. Remember, media is just a tool. In reality, it is used by people to push their negative propaganda.

This brings us to question and learn about the negative effects of media.
Who here, once in their life, have seen the “Fair and Lovely”? For those who don’t know, this advert teaches us the so-called superiority of “fair skin”. That you’re nothing without a fair skin, kyunki chitta gora he sabse accha hein! This negatively corrupts our minds, and actively promotes racism! There are more adverts like these that contribute towards discrimination and hatred. To note: as of date, backlash and criticism have forced the company to change the company’s name. It’s now, “Glow and Lovely”.

The media plays an important role in informing us about the latest news. But, the news we see, to what extent is true and biased? Most of the time, the media provides us a piece of biased news and only lets us know, about one side! One that will increase more views! In this way, people are not truly educated and this, once again, leads to hate and violence.

In a nutshell, the media influences you, your thoughts, and your actions. Media plays an active part in shaping your personality, your character.
You must have heard, “You are what you eat.” Well, I say, that you are what you see.

We can’t expect to see any changes to the functioning of media any time soon, so, as a responsible human being, it is your duty to take the responsibility of the media you see or do.

So, the next time when you see the video of a Karen refusing to wear a mask because “things gotta breathe”, don’t just don’t idolized her.

Thank you!

Thylacoleo carnifex

Thylacoleo carnifex, a marsupial lion, is an extinct species of carnivorous marsupial mammal that lived in Australia from the early to the late Pleistocene (1.6 million–46 thousand years ago).[1] Despite its name, it is not closely related to the lion, but is a member of the order Diprotodontia, one of the taxonomic groups of Australian marsupials.

Description
A species of Thylacoleo, it is the largest meat-eating mammal known to have ever existed in Australia, and one of the larger metatherian carnivores of the world (comparable to Thylacosmilus and Borhyaena species, but smaller than Proborhyaenidae). Individuals ranged up to around 75 cm (30 in) high at the shoulder and about 150 cm (59 in) from head to tail. Measurements taken from a number of specimens show they averaged 101 to 130 kg (223 to 287 lb) in weight, although individuals as large as 124–160 kg (273–353 lb) might not have been uncommon, and the largest weight was of 128–164 kg (282–362 lb).[2] This would make it comparable to female lions and female tigers in general size.

The animal was extremely robust with powerfully built jaws and very strong forelimbs. It possessed retractable claws, a unique trait among marsupials. This would have allowed the claws to remain sharp by protecting them from being worn down on hard surfaces. The claws were well-suited to securing prey and for climbing trees. The first digits (“thumbs”) on each hand were semi-opposable and bore an enlarged claw. Palaeontologists believe this would have been used to grapple its intended prey, as well as providing it with a sure footing on tree trunks and branches. The hind feet had four functional toes, the first digit being much reduced in size, but possessing a roughened pad similar to that of possums, which may have assisted with climbing. The discovery in 2005 of a specimen which included complete hind feet provided evidence that the marsupial lion exhibited syndactyly (fused second and third toes) like other diprotodonts.[3]

The species hindquarters were also well-developed, although to a lesser extent than the front of the animal. Remains of the animal show it had a relatively thick and strong tail and the vertebrae possessed chevrons on their undersides where the tail would have contacted the ground. These would have served to protect critical elements such as nerves and blood vessels if the animal used its tail to support itself when on its hind legs, much like present day kangaroos do. Taking this stance would free up its fore limbs to tackle or slash at its intended victim.[4] The discovery of complete skeletons preserving both the tail and clavicles (collarbones) in Australia’s Komatsu Cave in the town of Naracoorte and Flight Star Cave in the Nullarbor Plain, indicate the marsupial lion had a thick, stiff tail that comprised half the spinal column’s length. The tail may have been used in novel behaviors not seen in other marsupials, and was probably held aloft continuously. The discovery of the clavicle indicates that the marsupial lion may have had a similar type of locomotion to the modern Tasmanian devil.

Evolutionary relationships
The ancestors of thylacoleonids are believed to have been herbivores, something unusual for carnivores. Cranial features and arboreal characteristics suggest that thylacoleonids share a common ancestor with wombats.[6] While other continents were sharing many of their predators amongst themselves, as they were connected by land, Australia’s isolation caused many of its normally docile herbivorous species to turn carnivorous.[7] Possum-like features were once thought to indicate that the marsupial lion’s evolutionary path was from a phalangeriform ancestor, however, scientists agree that more prominent features suggest a vombatiform ancestry. However, the recently discovered Microleo is a possum-like animal.

The marsupial lion’s limb proportions and muscle mass distribution indicate that, although it was a powerful animal, it was not a particularly fast runner. Paleontologists conjecture that it was an ambush predator, either sneaking up and then leaping upon its prey, or dropping down on it from overhanging tree branches (a behaviour that may have been preserved in tribal memory and been the original inspiration for the fictional animal the drop bear, per a BBC documentary series[13]). This is consistent with the depictions of the animal as striped: camouflage of that kind is needed for stalking and hiding in a largely forested habitat (like tigers) rather than chasing across open spaces (like lions).[14] Trace fossils in the form of claw marks and bones from caves in Western Australia analyzed by Gavin Prideaux et al. indicate marsupial lions could also climb rock faces, and likely reared their young in such caves as a way of protecting them from potential predators.[15] It is thought to have hunted large animals such as the enormous Diprotodon and giant browsing kangaroos like Sthenurus and Procoptodon, and competed with other predatory animals such as the giant monitor lizard, megalania, and terrestrial crocodiles such as Quinkana. The marsupial lion may have cached kills in trees in a manner similar to the modern leopard.[16] Like many predators, it was probably also an opportunistic scavenger, feeding on carrion and driving off less powerful predators from their kills. It also may have shared behaviours exhibited by recent diprotodont marsupials such as kangaroos, like digging shallow holes under trees to reduce body temperature during the day.

Why I Like to Write?

Some people have a hard time to express their creativity and innovative minds. Some people speak it out, while others do. I am a part of this group and I express my creativity by writing.

 

There are many ways by which writing has helped me in my day-to-day life. For instance, like now. I am sharing my thoughts on writing, which I can’t do while speaking. I feel the anxiety shooting up when I speak. Whereas, while writing, I feel calm and relaxed. This differs for other people and I am not forcing you to write because writing requires an interest and it can’t come out of nowhere. So, if you feel to write a small story or a long lecture, you need interest.

 

 While reading gives you knowledge, writing gives satisfaction along with it. For example, making a cake gives you more happiness than a store-bought cake. Similarly, you get more satisfaction when you do an assignment yourself and not someone else doing it for you. So what I am trying to say here is that you are happier when you do it yourself. And that’s why, I like to write.

 

Thank You!!!