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  • It's AumSum Time

  • Can you guess the title of my next video?

  • Hurry up.

  • Write your guess in the comments section below.

  • Do animals live longer than humans?

  • Nooo.

  • Only I have the potion of eternal life.

  • Alright.

  • Alright.

  • Now listen.

  • When we are young, our cells divide rapidly to replace the old dying cells.

  • They even fight against diseases and help us remain healthy.

  • However, as we begin to age, the cells cannot efficiently divide and fight against diseases.

  • Thus, eventually our lifespan begins to come to an end.

  • Now, it is believed that animals live longer because of the environments they live in.

  • For example, animals that live in cold oceans have slow metabolic rates.

  • According to a study, slow metabolic rate slows down the aging process.

  • Thus making those animals live longer.

  • For example, Greenland sharks which are found in cold Arctic oceans can live up to 400 years.

  • In addition to this, it is observed that the size of an animal also plays a role in determining its lifespan.

  • Smaller the animal, more are the number of predators.

  • Hence, the risk of dying early is high.

  • Thus, animals like mice have a lifespan of about 1 to 2 years as compared to elephants whose lifespan is about 60 years.

  • However, animals like bats and some other birds are an exception to this size rule.

  • Even though they are small.

  • They don't die early and live a longer life because they have evolved strong defense mechanisms.

  • Moreover, it is also observed that some species which breathe fewer times per minute seem to live longer.

  • For example, a tortoise which takes about 4 to 5 breaths per minute lives for more than 100 years.

  • While a dog which takes about 24 breaths per minute lives for approximately 10 to 20 years.

  • Also, according to a study.

  • Very small species of animals like flies and worms lack the cells which divide and replace the old ones.

  • Hence, they don't live a long life.

  • Topic: Bad breath.

  • Why do we get bad breath?

  • It's not bad breath.

  • It's perfume.

  • Bad breath is generally caused by bacteria that live in our mouth.

  • These bacteria feed on the food particles which get stuck in our teeth, gums and tongue.

  • They breakdown the food particles into simpler forms.

  • Releasing foul smelling compounds such as hydrogen sulfide, methanethiol and cadaverine.

  • These gases form the bad breath.

  • But why is morning breath so bad?

  • Usually during the day, saliva carries the food particles and bacteria from the mouth into our stomach.

  • Thus controlling the bad breath.

  • However, when we sleep, we produce less saliva, making our mouth dry.

  • This increases the growth of bacteria, thus increasing the breakdown food.

  • Producing bad breath in the morning.

  • What is asthma?

  • It is a nickname for cinema.

  • Stop bluffing.

  • Asthma is a lung disease.

  • A person with asthma has red and swollen bronchial tubes with a lot of mucus.

  • As a result, the bronchial tubes get narrower than normal, thus making it hard to breathe.

  • Besides this, the bronchial tubes are highly sensitive to irritants like pollen, tobacco smoke, dust, etc.

  • When an asthmatic person inhales an irritant.

  • The tubes become much more swollen and more mucus is produced.

  • This causes further narrowing of the tubes.

  • This narrowing makes exhalation harder than inhalation.

  • Hence, carbon dioxide rich air gets trapped in the person's body.

  • He does not get sufficient supply of fresh oxygen supply of fresh oxygen.

  • As a result, the person can have severe shortness of breath and a feeling of tightness in the chest.

  • When an asthmatic person experiences such problems, he is said to have an asthma attack.

  • Why don't we drink seawater?

  • Simple.

  • Because it tastes salty.

  • You are right.

  • But besides taste, we don't drink seawater because it contains extreme amount of salt

  • Which can have dangerous effects on our body.

  • Really.

  • Indeed.

  • Now, normally in our body, the amount of water and salt, inside and outside our cells is the same.

  • However, if we drink seawater, the amount of salt outside our cells will increase.

  • Making the outside region much more concentrated.

  • Hence, to dilute the outside region and maintain balance, inside and outside the cells.

  • The water present inside the cells starts flowing outside, causing our cells to shrink.

  • Dude.

  • This can really have dangerous consequences, right?

  • Absolutely.

  • Moreover, to remove the extreme amount of salt, our kidneys will produce more urine.

  • Making us urinate more water and thus, causing severe dehydration.

  • Topic: Turgor Pressure.

  • Why does a touch me not plant close?

  • Hey.

  • Don't touch that plant.

  • You will get scared.

  • See, you did not listen to me.

  • Don't worry.

  • Nothing to be scared about.

  • Let me tell you more about this plant.

  • This plant is called the Mimosa Pudica plant.

  • Another name for it is ''Touch Me Not'' plant.

  • When anyone touches this plant, it closes its leaves with the help of pulvini.

  • Pulvini are present at the base of each leaflet.

  • They consist of cells filled with water.

  • This water applies pressure against the walls of the cells.

  • This pressure is called the turgor pressure.

  • It helps the leaflets to stand upright.

  • Now, when we touch a leaflet of the touch me not plant, specific parts of the plant release certain chemicals.

  • These chemicals cause the cells in the pulvini to lose water.

  • When water is lost, there is no more turgor pressure.

  • As a result, the cells collapse, resulting in the closing of leaflets.

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