Name: 卵はなぜ卵の形をしているのか？| 卵の形｜#aumsum (Why are Eggs Egg-shaped? | #aumsum)
Uploaded: 2021-01-14T08:09:25.000Z
Duration: 6 min 22 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

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Tapered end means greater surface area to
the bird's muscles.

That helps them to squeeze the egg out easily.

This asymmetric shape fits the eggs tightly together.

Why is grass killed if salt is sprinkled on it?

This happened because of a concept called osmosis.

Osmosis is the diffusion or movement of water molecules.

From a region of higher concentration of water through a semipermeable membrane.

To a region of lower concentration of water.

Do you think osmosis took place when we sprinkled salt on the grass?

Normally, osmosis does not take place on a day to day basis.

Because the grass tries to keep the concentration of water same inside

Outside its cells through the process of transpiration.

However, when we sprinkled salt on the grass.

The concentration of salt outside the grass increased and the concentration of water decreased.

As a result, the water present inside the
plant started flowing outside due to osmosis.

Since most of the water flowed out, the grass drooped down and eventually, it died.

Our hair is basically made up of keratin,
a colorless protein.

Hence, before our hair comes out of the skin, it is almost white.

A hair follicle contains melanocytes which
produce melanin.

Melanin is injected in the keratin cells during the growth of our hair.

Now, the color of our hair is dependent on
the type of melanin injected.

Eumelanin makes our hair black or brown while pheomelanin makes our hair red or blond.

However, as we grow old, the melanocytes decrease the production of melanin.

Thus, less melanin is injected in hair, causing them to eventually turn white.

Candies are usually made using sugar, water, corn syrup, various flavorings, etc.

Initially, all these ingredients are mixed
together.

The resulting solution is heated until most of the water boils off.

Usually, this syrup is poured in moulds and
allowed to cool and harden to make candies.

However, to make pop rocks, highly pressurized carbon dioxide gas is added to the syrup.

Then, it is cooled to subsequently form a
hard candy.

This results in the formation of small bubbles of pressurized carbon dioxide trapped inside the candy.

Now, when we put this candy in our mouth,
our saliva dissolves the candy.

As a result, the highly pressurized carbon
dioxide escapes from the bubbles with a pop.

We human beings generate heat in our body during muscle movement, metabolism, etc.

Most of this heat is used to maintain our
body temperature and keep us warm.

This might be because they are suffering from hyperthyroidism.

In hyperthyroidism, our thyroid gland which regulates metabolism does not function properly.

As a result, our metabolism slows down and less heat is generated due to which we feel cold.

Another possibility is a disorder called Raynaud's disease.

When a person having this disorder is stressed or is exposed to cold conditions.

The arteries of his hands and legs become narrow.

Hence, warm blood is not transported efficiently to his hands and legs, making his extremities feel cold.

In addition to this, less muscle mass, low
iron levels.

Smoking may also make some people always feel cold.