What natural factors do scientists study to understand long-term climate change? check all that apply. earth’s position pollen grains tectonic activity volcanic activity solar energy

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.