Answer:
I think that it is
B. A single layer of phospholipids forms the semipermeable cell membrane
C. The cell membrane contains proteins and lipids, but not carbohydrates.
D. A phospholipid bilayer forms the semipermeable cell membrane.
I hope that this helps you!
Melatonin I believ eis your answer. Not melanin like the pigment in our skin but melanin the sleep hormone.
Answer:
Temperature is a non-living factor in an organism's environment.
Explanation:
Non-living factors is also called abiotic factors. These factors have a great affect on the organisms growth and survival. With the help of abiotic factors i. e. sunlight, some organisms make their own food such as plants and algae. Some organisms lives in water which is abiotic factor such as fishes. Without these abiotic factors, all the organisms will die.
Answer:
The scientific study of interactions among organisms and their environment.
Explanation:
