D.
I Believe This Is Correct.
<h2>Scientist Observing changes </h2>
If the population of the species is significantly decreasing then the species could become extinct. The decline in population is due to some factors like less immigration, aging, and decreasing fertility rates. But the most is due to less immigration which causes to decrease population. The extinction of population can be prevented by some serious actions which should be taken government.
Protein synthesis in eukaryotic (plants and animal cells.) cells, occur in the ribosomes.
Answer:
Yes, they are secondary consumers, who sometimes eat phytoplankton
Explanation:
