Biology, 25.06.2019 22:30 ginapogones4958

Which structure or substance is responsible for filter and clean air as it passes through the trachea and bronchioles? a. cilia b. saliva c. nasal passages d. alveoli

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Answer from: lexilove262

Explanation:

because the cilia is in the trachea and it pushes foreign things out as it breathe in air and it pushes out things such as dust and all that

Answer from: alex6toes

Cilia

Explanation: Respiration can be defined as the phenomenon in which the exchange of gases takes place between the lungs and outer environment.

The process by which the air is inhaled is known as inhalation and the process y which carbon dioxide is moved out of the body is known as expiration.

The whole of the respiratory track is ciliated that protects the nasal passage by the entrance of the harmful pathogens, dirt and foreign particles. It propels out the foreign particles out of the body by the back and forth movement.

Answer from: Quest

the food storage products of chrysophytes are oils or the polysaccharide laminarin. formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

Answer from: Quest

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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Which structure or substance is responsible for filter and clean air as it passes through the trach...

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