Answer:
Plants
Explanation:
An abiotic factor is a nonliving thing of condition, such as climate or habitat, and it influences (or affects) an ecosystem and the organisms in it.
<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>
The correct answer is b, antigens
