Answer:
An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.
Answer: Sea snakes have many adaptations. Like for instance, they have paddle-like tails to help swim more efficiently, and a special flap of tissue to prevent water from entering its lungs.
Explanation:
They develop these adaptations for survival purposes.
I'm not sure but it might be C
