Answer: atmosphere
Explanation:
We cannot see the surface of Mars because of its thick atmosphere and of the iron dust that kicks up
Answer: Snakes are reptiles
Explanation: All reptiles are ectothermic (they obtain body heat from their environment).
Answer: Answer is D
I took the test little while back.
Ans is <span>I. Flowing groundwater that dissolves rock , such as limestone</span>
