Answer:
The lichen is a decomposer that digests rocks and forms soil.
Answer:
Mitosis involves the division of body cells, while meiosis involves the division of sex cells.
Explanation:
They are a good choice because at any given time, you can find cells that are undergoing mitosis.
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Hope this helps...
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A user mentioned in the comments of one of the answers deleted: "its B" < The user (<span>lolbae0806) had mentioned this...</span>
So I believe the correct answer is:
B.) More oxygen gas became present in the atmosphere.