*Question*
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*
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*
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*
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