The role is to build up water with its dam to create a lake thus creating parts of the ecosystem it is also food for some animals.
<span>Rough ER is called rough because it has ribosomes attached to its surface. The double membranes of smooth and rough ER form sacs called cisternae. Protein molecules are synthesized and collected in the cisternal space/lumen. When enough proteins have been synthesized, they collect and are pinched off in vesicles.</span>
Answer: Divergent is the correct answer
Explanation: Did a whole test in 6th grade and got it right :3
Water, which is a chemical compound of hydrogen and oxygen in the ratio two hydrogen atoms for every oxygen atom, contains H2O molecules.
