It would be A keeping lakes and rivers free of pollution im pretty sure im on the question myself but im pretty sure that i got it right.
Answer:
Hypertension
Explanation:
One of the following features of potassium is that Liberal intakes may correct hypertension. This is mainly because Hypertension, also known as high blood pressure is caused by elevated blood pressure within the arteries, and Potassium has been known to help lower blood pressure by balancing the negative effects caused by salt.
D) It controls materials that enter and exit the cell
Answer: The correct answer is Gene.
Gene is a segment of DNA ( deoxyribonucleic acid) that codes for a protein. The protein thus formed corresponds to a specific trait of the organism.
The gene first undergoes transcription to synthesize mRNA ( messenger RNA), which is finally translated to form protein.
Thus, the term associated with transcription and that describe regions of nucleic acid is gene.