URGENT

I have a very low metabolism, I never see light and I am a very small organism. The temperature of my environment is constant and I don't need much to eat to survive. What is my Ecosystem?
Group of answer choices

aquifer

pond

estuary

swamp

Aquifer

Explanation:

Aquifer's are underground water sources. So this answers a couple of questions. Generally, aquifer's are pretty small. And because it is an underground water source, it never see's light, like the question suggests. The temperature is constant because it never see's the sun and remains in the same place, therefore there is nothing that has the ability to change the temperature of the environment.

answer; i believe that the correct answer is (light);

answer; /// i believe the correct answer is (thrombocytopenia); (a)