Ques: Answer the following question given this paragraph: The major atmospheric gases are nitrogen and oxygen. The atmosphere also contains minor amounts of other gases, including carbon dioxide. Q: What are the two major atmospheric gases? Choices: - carbon and helium - nitrogen and hydrogen - hydrogen and oxygen - nitrogen and oxygen A:
Ans: nitrogen and oxygen

Ques: Answer the following question given this paragraph: Prophase I: Chromosomes form, and the nuclear membrane breaks down. Centrioles move to opposite poles of the cell. Spindle fibers form between the centrioles. Here's what's special about meiosis : Homologous chromosomes pair up! You can see this in Figure below . Q: Spindle fibers form between the centrioles during prophase i of what process? Choices: - mitosis - hydrolysis - photosynthesis - meiosis A:
Ans: meiosis

Ques: Answer the following question given this paragraph: A low level of radiation occurs naturally in the environment. This is called background radiation. One source of background radiation is rocks, which may contain small amounts of radioactive elements such as uranium. Another source is cosmic rays. These are charged particles that arrive on Earth from outer space. Background radiation is generally considered to be safe for living things. You can learn more about background radiation with the animation at this URL: http://www. pbs. org/wgbh/nova/dirtybomb/sources. html. Q: A low level of radiation occurs naturally in the environment and is called what? Choices: - Gamma radiation - Beta radiation - Alpha radiation - background radiation A:
Ans: background radiation

Ques: Answer the following question given this paragraph: The temperature at which condensation of water vapor occurs is called the dew point. The dew point varies depending on air temperature and moisture content. Q: What is the temperature at which condensation of water vapor occurs called? Choices: - the tipping point - the boiling point - the cooling point - the dew point A:
Ans:
the dew point