Answer:
B. Determine the phenotype of an organism with a dominant trait
Explanation:
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The answer is A.
The answer is A because that is the only positive of the entire set of answers.
B has a negative word of pollution which is something we are currently trying to stop.
C has threaten which would make other fish populations threatened or other aqua culture
And D has diseases which is obviously negative for the fact that diseases causes death and will ultimately lead to an endangered or extinct species if mutations or adaptions are not made.
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Answer: Because they produce gloucose by photosynthesis
Explanation:
There contain chlorophyll which allows them to undergo photosynthesis
