Problem:OPTIONS:
- sugars
- air
- electricity
- light

Answer the following question given this paragraph: The structures of the human eye collect and focus light. They form a reduced, upside-down image on the retina at the back of the eye. Q: What do structures of the human eye collect and focus? A:
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A: light

Problem:OPTIONS:
- cancerous
- hypothesis
- consciousness
- homeostasis

Answer the following question given this paragraph: The organ systems of the body work together to carry out life processes and maintain homeostasis. The body is in homeostasis when its internal environment is kept more-or-less constant. For example, levels of sugar, carbon dioxide, and water in the blood must be kept within narrow ranges. This requires continuous adjustments. For example:. Q: What state is achieved when the body's internal environment is kept more-or-less constant? A:
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A: homeostasis

Problem:OPTIONS:
- ice, rock, sky
- vapor, earth, internal
- liquid, underground, frozen
- ice, liquid, vapor

Answer the following question given this paragraph: (A) Natalie Lucier; (B) Gareth Haywood; (C) Lynn Greyling. Ice, liquid, and water vapor are the three phases of water . (A) CC BY 2.0; (B) CC BY 2.0; (C) Public Domain. Q: What are the three stages of water? A:
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A: ice, liquid, vapor

Problem:OPTIONS:
- shallow currents
- still water
- flat currents
- deep currents

Answer the following question given this paragraph: Currents also flow deep below the surface of the ocean. Deep currents are caused by differences in density at the top and bottom. More dense water takes up less space than less dense water. It has the same mass but less volume. Water that is more dense sinks. Less dense water rises. What can make water more dense?. Q: What is caused by differences in density at the top and bottom of the ocean? A:
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A:
deep currents