rapidly destroying the lonely resource we have by which all people can survive and prosper. Everywhere fertile soil is ____27____ built on or washed into the sea. Renewable resources are exploited so much that they will never be able to recover _____28_____. We discharge pollutants into the atmosphere without any thought of the consequences. As a result, the planet's ability to support people is being reduced at the very time when rising human numbers and consumption are ____29____ increasingly heavy demands on it.