The answer would be C valleys formed by a glaciers.
Answer:
A
Explanation:
It is converted by fixing nitrogen in the root nodules of some plants species
Answer: Option C
Explanation:
These cells are soft because of its function. Gaseous exchange takes place by the help of these cells. Spongy mesophyll cells are covered by thin layer of water and are loosely packed.
This is because, during the day time when the plant is performing photosynthesis these cells allows the carbon dioxide into the mesophyll cells and the oxygen out of the plant body.
Reliable; it has been proven to be right in multiple tests, therefore it is a solid data
