Answer the following question given this paragraph: At the top of the mesosphere is the mesopause. Temperatures here are colder than anywhere else in the atmosphere. They are as low as -100 C (-212 F)! Nowhere on Earth's surface is that cold. Q: What is at the top of the mesosphere? Choices: - Troposphere - Stratosphere - Mesosphere - mesopause A:
mesopause
Answer the following question given this paragraph: Elements involved in nuclear reactions are radioactive. How do you think radioactive elements differ from other elements?. Q: Elements involved in nuclear reactions are what? Choices: - detectable - inert - static - radioactive A:
radioactive
Q: Answer the following question given this paragraph: That may depend on the plant. Start with moss. The typical nonvascular plant. But such a simple plant has a very interesting life cycle. Whereas most kinds of plants have two sets of chromosomes in their vegetative cells, mosses have only a single set of chromosomes. So, how does meiosis occur?. Q: How many set of chromosomes do moss have? Choices: - double set - triple set - none - single set A:
A: single set
Question: Answer the following question given this paragraph: Heavily vegetated lands are less likely to experience flooding. Plants slow down water as it runs over the land, giving it time to enter the ground. If the ground is too wet to absorb more water, plants still slow the water's passage. Slower water keeps all the water from entering the stream at once. Wetlands play a key role in minimizing the impacts of floods. Wetlands act as a buffer between land and high water levels. Flooding is often more severe in areas that have been recently logged. Q: Heavily vegetated lands are less likely to experience what? Choices: - expansion - drought - rains - flooding A:
Answer: flooding
*Question*
Answer the following question given this paragraph: Around 1850, a German doctor named Rudolf Virchow was observing living cells under a microscope. As he was watching, one of the cells happened to divide. Figure below shows a cell dividing, like the cell observed by Virchow. This was an "aha" moment for Virchow. He realized that living cells produce new cells by dividing. This was evidence that cells arise from other cells. 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*
Answer the following question given this paragraph: The continental shelf is the ocean floor nearest the edges of continents. It has a a gentle slope. The water over the continental shelf is shallow. 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