Question

what is the composition of air
how do earthworms breath ​

Answer 1

${\tt{\red{\underline{\underline{\huge{AnswEr\:1}}}}}}$

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

${\tt{\blue{\underline{\underline{\huge{AnswEr\:2}}}}}}$

Worms breathe air in and carbon dioxide out, just like us, but they don't have lungs. They can't breathe through their mouth, and certainly can't breathe through their nose because they don't even have one! They breathe through their skin.

Answer 2

$\huge\mathfrak\green{QUESTION}$

$what \: is \: the \: composition \: of \: air?$

$\huge\mathfrak\green{ANSWER}$

Air is mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it.

$\huge\mathfrak\green{QUESTION}$

$how \: do \: earthworms \: breath?$

$\huge\mathfrak\green{Answer}$

Earthworms do not have lungs; instead, they breathe through their skin. Their skin needs to stay moist to allow the passage of dissolved oxygen into their bloodstream. Earthworm skin is coated with mucus, and they need to live in a humid, moist environment.