Biology, 27.06.2019 05:30 nakeytrag

Why does exhaled air contain more carbon dioxide than inhaled air

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Exhalation: is the process of air exit from the pulmonary alveoli (the alveoli) located in the lungs and then passes through the airways in the respiratory system and finally to the outside atmosphere. Exhaled air is rich in CO2, although this gas is produced after the cells are expelled by the internal respiration process to produce adenosine triphosphate. Exhalation is an opposite process of arousal. These devices work together to maintain the body's internal balance.

Mechanism of Exhalation:

When the exhalation spreads, the diaphragm muscle reduces the size of the lungs from the bottom up, and the rib muscles, which reduce the size of the lungs from the back to the front, also spread. The lungs shrink, making the air pressure in the lungs higher than atmospheric pressure. .

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the answer for this question would be d. glaciers

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answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

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