What are some typical adaptations for these animals for these animals and why?
_ The lack of pigmentation.
_ development of sensory ( they don't depend on light )
_ reducing the size of the eyes.
Why is oxygen NOT plentiful in caves, and how do creatures deal with the lack of oxygen?
_ Oxygen is not plentiful because there is no photosynthesis.
_ Creatures deal with the lack of oxygen by reacting in a certain way, or physically in the environment they are in at the moment.
Why do adaptations occur?
_ It's not because animals need to or want to adapt but they adapt on their own randomly.