Does this link help?
Link: https://bscb.org/learning-resources/softcell-e-learning/endoplasmic-reticulum-rough-and-smooth/
Answer:
Explanation:
Most limestones actually start as calcium carbonate mud or shells precipitated by organisms in reefs or shallow shelf regions - the biosphere. Over time, the limestone is broken down into its chemical parts and may come back to the surface as volcanic CO2 (in the atmosphere).
C. the answer is c. i just took this test on keystone (i think this is keystone question. right?0
The correct answer is A.
Fungi can reproduce asexually while animals cannot.
