Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.  As more people are added to Earth, they will find increasing or decreasing water scarcity?
increasing

Increasing air temperature decreases atmospheric pressure.  If the air temperature falls during a heat wave, what is likely happening to the atmospheric pressure It will increase or It will decrease?
It will increase

In a series circuit, the resistance increases as more resistors are added in series.  If Eric tries to get less resistance in a series circuit, the number of resistors should increases or decreases?
decreases