You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Q: Paragraph: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.
 Question: Ian sees an object with few colliding particles, and he compares it to another object with few colliding particles. Which is true about the objects? 
 Choices: A)the object with many colliding particles has a lower concentration of particles 
B)the object with many colliding particles has a higher concentration of particles

A: the object with many colliding particles has a lower concentration of particles
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Q: Paragraph: In the mesosphere, temperature decreases as altitude increases.
 Question: When we get higher in the air what happens to the temperature? 
 Choices: A)goes up 
B)goes down

A: goes down
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Q: Paragraph: In refraction of light, the greater the change in speed, the more light bends.
 Question: John was looking at a refractive index and observing the light. The more speed the light had, it would bend 
 Choices: A)More 
B)Less

A:
More
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