The peak above is part of the a chain of volcanic mountains that runs through the middle of central america. a. sierra madre occidentals b. andes mountains c. sierra madre orientals

Which statements are true about point and nonpoint source pollution? human activity causes point and nonpoint source pollution. only nonpoint source pollution affects abiotic factors in a watershed. point source pollution affects only the part of the lake or river near it. both point and nonpoint source pollution affect biotic factors in a watershed. point pollution flows through the bodies of water in a watershed but not through its land.