What chemical process produces the enormous amount of energy that comes to
us from the Sun?

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

Where does the availability of water pose the greatest problem

What's a recharge area? a. the part of an aquifer where groundwater meets a lake or stream b. the part of an aquifer where surface water reaches the water table c. the part of an aquifer that's located between two aquicludes d. the part of an aquifer that's located at a lower elevation