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42) Organisms that are found living kilometers beneath Earth’s crust are referred to as

49. Cells that lack a nucleus are called

35) The Martian meteorite ALH84001 was found in the

24) How does the surface temperature and atmospheric pressure on Venus compare with the Earth?

3) Which of the following is **not** evidence that has been found for liquid water on Mars’ surface in the past?

6) Temperatures on Mercury are

39) Humans are scientifically classified as Homo sapiens. In this taxonomy system, the word Homo refers to the

46) Organisms that can survive at very low temperatures are referred to as

13) Which of the following are possible causes for mass extinctions on Earth?

8) The first molecules of RNA were probably made