global ecological problems

powerpoint presentation global ecological problems ecology is a science. many sciences have such prefix. what does it mean “eco”? “eco” means “home" in latin language. it’s a science about our mutual home – about nature. science, which teachers us to treat very carefully to our homeland. environment – is surroundings we live in. people have always polluted their surroundings. even in ancient times people admitted that their health was depending on the state of surroundings. but only in xx century humanity, in full measure, realized , that many diseases are closely connected with the air and water pollution and inferior products. ecological problems air pollution. air pollution is a very serious problem, because polluted air can cause illness and even …

This file contains 14 pages in PPT format (2.6 MB). To download "global ecological problems", click the Telegram button on the left.