The answer is A. An organism living at the bottom of the ocean is used to a high pressure so they cannot study them as the lower pressure kills the organisms as they reach the surface.
I think c is the correct answer
Answer: melanin
Explanation: Further, other cells contribute to the function of the epidermis. Melanocytes are cells that produce melanin, a compound involved in skin pigmentation produced in response to ultraviolet (UV) light exposure (6). Melanin can absorb energy from UV light to shield underlying tissues from damage.
Answer:
I think Experimentation :)
Explanation:
apologies if its incorrect.
Answer:
True. The heart contracts twice per heartbeat. One contraction is the ventricular and the other one is the artrial.
