input: OPTIONS:
- eye
- antennae
- amplifier
- the ear Now, answer this question: Answer the following question given this paragraph: The organ that we use to hear sound is the ear. Almost all the structures in the ear are needed for this purpose. Together, they gather and amplify sound waves and change their energy to electrical signals. The electrical signals travel to the brain, which interprets them as sound. Q: What organ do we use to hear sound? A:
A:
output: the ear

Answer the following question given this paragraph: The Pressure of a Mixture of Gases: Dalton's Law Unless they chemically react with each other, the individual gases in a mixture of gases do not affect each other's pressure. Each individual gas in a mixture exerts the same pressure that it would exert if it present alone in the container (Figure 9.20). The pressure exerted by each individual gas in a mixture is called its partial pressure. This observation is summarized by Dalton's law of partial pressures: The total pressure of a mixture of ideal gases is equal to the sum of the partial pressures of the component gases: P Total = P A + P B + P C + . = i P i In the equation PTotal is the total pressure of a mixture of gases, PA is the partial pressure of gas A; PB is the partial pressure of gas B; PC is the partial pressure of gas C; and so on. Q: According to dalton's law, unless they chemically react with each other, individual gases in a mixture of gases do not affect each other's what? A:

OPTIONS:
- mass
- weight
- density
- pressure

Answer: pressure

Problem: OPTIONS:
- slipping
- evaporation
- experiencing
- weathering
Q: Answer the following question given this paragraph: Weather makes life interesting. Weather also causes weathering. Weathering is the slow wearing down of rocks on Earth's surface. Wind-blown sand scours rocks like sandpaper. Glaciers of ice scrape across rock surfaces like a file. Even gentle rain may seep into rocks and slowly dissolve them. If the water freezes, it expands. This eventually causes the rocks to crack. Without the atmosphere, none of this weathering would happen. Rocks at the surface would be pristine and unaltered. Q: What is the term for the slow wearing down of rocks on earth's surface? A:
Answer: weathering

Problem:OPTIONS:
- nutrients
- spores
- nitrogen
- pollen

Answer the following question given this paragraph: Q: What do male cones in seed plants contain? A:
****
A: pollen

Answer the following question given this paragraph: Different types of bacteria stain a different color when Gram stain is applied to them. This makes them easy to identify. Some stain purple and some stain red, as you can see in Figure below . The two types differ in their outer layers. This explains why they stain differently. Q: What is a gram stain used to identify ? A:
OPTIONS:
- radioactivity
- acids or bases
- different types of liquids
- different types of bacteria
different types of bacteria

Answer the following question given this paragraph: Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass, which is how much matter the object contains. It also depends on the downward acceleration of the object due to gravity, which is the same all over Earth. Weight can be represented by the equation:. Q: What is the term for the measure of the force of gravity pulling down on an object? A:
OPTIONS:
- mass
- density
- pressure
- weight

Answer:
weight