Q: What is at the top of the mesosphere? Choices: - Troposphere - Stratosphere - Mesosphere - mesopause A:
mesopause

Q: Elements involved in nuclear reactions are what? Choices: - detectable - inert - static - radioactive A:
radioactive

Q: Q: How many set of chromosomes do moss have? Choices: - double set - triple set - none - single set A:
A: single set

Question: Q: Heavily vegetated lands are less likely to experience what? Choices: - expansion - drought - rains - flooding A:
Answer: flooding

*Question*
Q: German doctor rudolf virchow first discovered what process when studying living cells under a microscope? Choices: - radiation - evolution - photosynthesis - cell division A:
**Answer**
cell division

*Question*
Q: What do you call the gently sloped ocean floor nearest the edges of continents? Choices: - continental divide - continental stratosphere - continental solution - continental shelf A:
**Answer**
continental shelf