Answer the following question given this paragraph: There are about 6,200 known species of living amphibians. They are classified into three orders: frogs and toads, salamanders and newts, and caecilians. Q: Frogs and toads, salamanders and newts, and caecilians are the three orders of what group of animals? Choices: - marsupials - reptiles - mammals - amphibians A:
amphibians
Answer the following question given this paragraph: Chromoplasts are plastids that make and store other pigments. The red pigment that colors the flower petals in Figure above was made by chromoplasts. Q: What plastid makes and stores other pigments? Choices: - pores - pores - sporozoans - chromoplasts A:
chromoplasts
Q: Answer the following question given this paragraph: Most cancers are caused by mutations. Mutations are random errors in genes. Mutations that lead to cancer usually occur in genes that control the cell cycle. Because of the mutations, abnormal cells are allowed to divide. Q: What is the most common cause of cancer? Choices: - poor diet - smoking - technology mutations - cell mutations A:
A: cell mutations
Question: Answer the following question given this paragraph: Scientists are searching for ways to create controlled nuclear fusion reactions on Earth. Their goal is develop nuclear fusion power plants, where the energy from fusion of hydrogen nuclei can be converted to electricity. You can see how this might work in the Figure below . In the thermonuclear reactor, radiation from fusion is used to heat water and produce steam. The steam can then be used to turn a turbine and generate electricity. Q: What drives the turbine in a thermonuclear reactor? Choices: - magnets - heated oil - wind energy - heated water or steam A:
Answer: heated water or steam
*Question*
Answer the following question given this paragraph: The Sun is mostly hydrogen with smaller amounts of helium. The material is in the form of plasma. Q: What element is the sun mostly made up of? Choices: - manganese - mercury - helium - hydrogen A:
**Answer**
hydrogen
Answer the following question given this paragraph: Cell division is how organisms grow and repair themselves. It is also how they produce offspring. Many single-celled organisms reproduce by binary fission. The parent cell simply divides to form two daughter cells that are identical to the parent. In many other organisms, two parents are involved, and the offspring are not identical to the parents. In fact, each offspring is unique. Look at the family in Figure below . The children resemble their parents, but they are not identical to them. Instead, each has a unique combination of characteristics inherited from both parents. In this lesson, you will learn how this happens. Q: What do organisms use to grow and repair themselves? Choices: - diffusion - mutation - cell solution - cell division A:
cell division