(Question)
Read the passage below and choose the right answer to the following question (choices are lower. or higher ):  Temperature increases with depth inside the Earth, so melting of rocks is more likely to occur at greater depths.   Mark studies rocks for a living. He is curious if rocks deeper in the Earth will be warmer or cooler. If Mark were to take the temperature of a rock that is half a mile into the Earth's surface, and then take the temperature of a rock 1 mile into the Earth's surface, he would find that the rock half a mile into the Earth's temperature is lower. or higher?
(Answer)
lower.


(Question)
Read the passage below and choose the right answer to the following question (choices are colder or warmer ):  The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.   Plants grow more poorly in the tundra because it is colder or warmer?
(Answer)
colder


(Question)
Read the passage below and choose the right answer to the following question (choices are long or short ):  Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.   High frequency bass notes have what length wavelengths long or short?
(Answer)
short