Every organism that has walked on Earth leaves imprints. Humans are of no exception. However, the imprints humans leave may not be all good like pollution and damage to ecosystems. This science book discusses the many ways humans affect the environment. It also includes information on point and nonpoint sources of pollution. Get a copy today.
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.