Answer: Biologists and ecologists define a symbiotic relationship as an intimate interaction between two or more species, which may or may not be beneficial to either. The sea anemone and the clownfish live together in a type of symbiotic relationship called mutualism, where both species benefit from the other. The sea anemone offers the clownfish protection and leftover food.
Explanation:
Sometimes, reading things out loud can help a lot. "I had eat all the leftovers." Does that sound right? How about "I had eating all the leftovers," or "I had ate all the leftovers"? What about "I had eaten all the leftovers"?
If this doesn't work for you, think of it like this: you must always use the PAST PARTICIPLE after a form of the word "have." For example, "I had given you the present." Which of your options is most similar? Most likely, the answer is "eaten": "I confessed that I had eaten all the leftovers."
Answer: B. Eaten
The changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.
Answer :C
Just For Fun:
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