Answer:
B, D, D?, C, D
Explanation:
Hopefully these are correct.
Answer:
Grass and tree
A producer is a living thing that makes its own food. All food chains begin with producers.
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Answer: B. Commensalism
Explanation: Commensalism is an association between two organisms in which one benefits and the other derives neither benefit nor harm. So, since the remora benefits and the shark is really not harmed or benefitted, B is the best answer.
Answer: In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research.