Answer: The answer is runoff.
Explanation: Runoff is water “running off” the land surface.
Answer: "c<span>ase fatality rate" .
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Process A likely describes a photosynthesis whilst process B describes respiration.
Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
The answer is operon. These set of genes are transcribed together because they share a single promoter and operator. Therefore they are transcribed into one mRNA and translated together. These genes are, therefore, expressed together at all times. Examples are the tryptophan and lac operons of Escherichia coli