Answer the following question given this paragraph: Infectious diseases are diseases that spread from person to person. They are caused by pathogens such as bacteria, viruses or fungi. What can you do to avoid infectious diseases? Eating right and getting plenty of sleep are a good start. These habits will help keep your immune system healthy. With a healthy immune system, you will be able to fight off many pathogens. The next best way is to avoid pathogens. Though this is difficult, there are steps you can take to limit your exposure to pathogens. Q: What system is responsible for defending your body against sickness? Choices: - nervous system - circulatory system - digestion system - immune system A:
immune system
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Answer the following question given this paragraph: If you look at a star through a prism, you will see a spectrum . The spectrum is the range of colors seen in a rainbow. The spectrum has specific dark bands where elements in the star have absorbed light of certain energies. An astronomer can use these lines to determine which elements are in a distant star. In fact, the element helium was first discovered in our Sun, not on Earth. This was done by analyzing the absorption lines in the spectrum of the sun. Q: What will you see if you look at a star through a prism? Choices: - kaleidoscope - rainbow - spots - spectrum A:
spectrum
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Answer the following question given this paragraph: Diamond is a network solid and consists of carbon atoms covalently bonded to one another in a repeating three-dimensional pattern. Each carbon atom makes four single covalent bonds in a tetrahedral geometry. Q: What is a network solid and consists of carbon atoms covalently bonded to one another in a repeating three-dimensional pattern? Choices: - a zirconium - a ruby - an agate - a diamond A:
a diamond
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Answer the following question given this paragraph: Q: During what stage are chromosomes condensed enough to be seen under a microscope? Choices: - cytokinesis - meiosis - epistasis - mitosis A:
mitosis
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