I would say that the most likely answer is C.
While B and D could happen that are too vague and non-descript, A is completely wrong.
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Answer ➜ Competition and lack of nutrition are probably the main reasons and according to Biologists, the reason Earth is not covered with bacteria is that conditions are not ripe for bacteria to develop.
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Answer:
true
Explanation:
Explanation: A scientific model can be define as the representation of the idea, process
I would say A or B. But I am leaning more towards B. Hope I helped! Sorry if I didn't. :)