*Question*
Read the passage below and choose the right answer to the following question (choices are increase or decrease ):  In the mesosphere, temperature decreases as altitude increases.   If a person went higher into the mesosphere, would the temperature increase or decrease?
**Answer**
decrease

*Question*
Read the passage below and choose the right answer to the following question (choices are higher or lower ):  In electromagnetic waves with higher frequencies, photons have more energy.   Don is looking at electromagnetic waves, and sees that the one's he observing have higher frequencies. Don is able to know then that the photons have energy that is higher or lower?
**Answer**
higher

*Question*
Read the passage below and choose the right answer to the following question (choices are scarce or plentiful ):  Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.   John's town used to have lots of water, back when there were only a few hundred people. However, now that the town holds several thousand people, the water availability is scarce or plentiful?
**Answer**
scarce

*Question*
Read the passage below and choose the right answer to the following question (choices are more or less ):  On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.   If Jim is an endotherm would his body give off more or less heat if the blood flow to the surface of his body were increased?
**Answer**
more