What is carbon dioxide? Detailed answer

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What is carbon dioxide? Detailed answer

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What is carbon dioxide?

Carbon dioxide is a substance that usually exists in a gaseous state. It can become hard if it cools a little. The air always contains a small amount of carbon dioxide, about 1 liter in 2560 liters of air. Most of the carbon dioxide enters the air when animal and plant carbon tissues decompose. Fuels made up of carbon, such as wood or coal, produce large amounts of carbon dioxide when burned.

The human body requires a small amount of carbon dioxide to exist. It controls the speed of the heartbeat and some other bodily functions. But oversaturation of the body with carbon dioxide can cause harm and even cause death. Humans get oxygen from the air they breathe. Oxygen enters the blood. There it combines with food and turns into carbon dioxide as a result of chemical reactions. Carbon dioxide returns to the lungs and is exhaled. Trees, in turn, experience a vital need for carbon dioxide.

Green plants absorb carbon dioxide from the air through pores in their leaves. It combines with water, and then with the help of sunlight, carbon dioxide and water are converted into starch and other food for the plant. The plant releases oxygen. Plants give off oxygen and take in carbon dioxide.

Humans and animals breathe in oxygen and breathe out carbon dioxide. This maintains a constant amount of oxygen and carbon dioxide in the air. Carbon dioxide also has industrial applications, the best known of which is the carbonation of beverages.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Where is the birthplace of canaries?

Finches form a large family, which belongs to a large order of tree birds. This includes the common birds of Britain (such as sparrows, yellownoses and linnets), as well as canaries. Canaries are bred and raised in many countries, but the Canary Islands, Madeira and the Azores were the place of their initial settlement.

The free-living finches canaries are about 14 centimeters long and olive-green in color with brown stripes on top and a greenish-yellow belly.

Canaries were first kept in cages in the sixteenth century, and today's poultry are a little different from their wild predecessors. This happened because for many generations people tried to breed birds with certain properties, and muffle some properties. Some canaries are bred for singing, others for body shape, and some for color.

The most popular are domestic canaries, which are bred for their singing. In America these birds now breed quite successfully, but probably the best song canaries are those from the Harz mountains in Germany. Did you know that young canaries imitate the voices of other birds? Therefore, in order to teach a young canary to sing, the best singers from adult birds are used. Sometimes it is even possible to train a canary to trill a nightingale if you play recordings of nightingale singing to it!

Canaries are easy to care for. There should be clean sand in their cages at the bottom. The birds should have fresh drinking water of sorts, and they should take a warm bath daily. For food, they should be given some kind of bird food and some greens - for example, cut grass or lettuce. You can not feed them sour fruits. They also like to peck at cuttlefish bones, from which they get the necessary lime. Canaries are very sensitive to drafts, so in winter the cage should not be hung near windows.

From time to time they need to stretch their wings and fly, so sometimes they need to be released in a closed room. When a canary's claws grow too much, they need to be put in order.

Test your knowledge! Did you know...

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