Question

Trees helps yo replace the oxygen used up by _______​

Answer 1

Answer:

Living organisms like animals, humans etc

Answer 2

$\huge\tt \red{Question:}$

Trees helps yo replace the oxygen used up by _____.

$\huge\tt \red{Answer:}$

Trees helps yo replace the oxygen used up by photosynthesis.

$\huge\tt \red{Explanation:}$

Through a process called photosynthesis, leaves pull in carbon dioxide and water and use the energy of the sun to convert this into chemical compounds such as sugars that feed the tree. But as a by-product of that chemical reaction oxygen is produced and released by the tree.