Answer:
A theory
Explanation:
A theory is an idea used to account for a situation or justify a course of action.
Answer:
d
Explanation:
I don't know, I'm just assuming
answer for this question is A
Answer:
Yes!
Explanation:
From largest to smallest: biosphere, biome, ecosystem, community, population, and organism. Hope I helped :)
It'd Be Lovely to get Brainliest .
