Answer:
most likely sight
Explanation: it is very dark in caves anyways, and their pupils would need to adjust to light, and of they have been living in a cave for a while, they would have adapted larger pupils to take in any possible light.
They provide a critical habitat for many other organisms <span>best explains the role of deep sea coral reefs in the environment.</span>
Scanning electron microscope is the answer.This type of microscope<span> is an instrument for observing at the atomic leve</span>