B. It is rigid it is important becuase it keeps the plants structure and it allows the plant to stand upright.It is not a fluid and because it is rigid it does not stretch.It cannot be C. because the cell wall is made of cellulose and it is a non living maerial therefore it cannot be alive
Answer: mesosphere
Explanation: because I am studying it right now
Hydrogen is abundant in the sun.
<span>He could design and perform a new controlled experiment to test the hypothesis.</span>
