Answer:
I think the answer is B. I think energy decreases as it moves up tropic levels when it is lost as the organisms from one level consume the organisms in the other.
Explanation:
It can't be A because animals do travel from one ecosystem to another. It's migration. It's not C because air can be used by organisms as once as the air moves out of their ecosystem because air is everywhere and the organisms need air to breathe and to live. D is definitely incorrect because matter can't be created or destroyed. Remember that an ecosystem is the organisms physical environment. I hope this answers your question.
I think its D. but I'm not sure
The reason being is it's a prosses that doesn't require the "help" or "cooperation" of other cells and it only effects the one cell.
I think it’s a galaxy im sorry if I’m wrong !!
Answer:
air masses
Explanation:
a front forms where two air masses of different temperatures meet each other
Hope that help
