A.
Most of the rain is evaporated ocean water
By the excretory system through the large intestine
Answer: The correct option is A.
Biosphere and ecosystems
Explanation:
This is because Biosphere and ecosystems include non living things and biosphere is the layer of the ecosystem that consist of both living and non living things.
Ecosystem consist of a area which consist of living things like plants, animals e t.c interacting with the non living part of the environment I e physical part which include temperature, soil e.t.c.
1) a five carbon ribose sugar
2) a phosphate molecule
3) one of four nitrogenous bases: adenine, guanine, cytosine or uracil
