For *ny environmentalists, the world seems to be getting worse. They have developed a hit-list of our *in fears: natural resources are __1__ out the population is ever growing, leaving less and less to eat? Species are becoming __2__ in vast numbers, and the planet's air and water are becoming ever more polluted.
But a quick look at the facts shows a different picture. First, energy and other natural resources have become more __3__ not less so, since the book 'The Limits to Growth' was published in 1972 by a group of scientists. Second, more food is now produced per __4__ of the world's population than at any time in history. Fewer people are __5__. Third, although species are indeed becoming extinct, only about 0.7% of them are expected to disappear in the next 50 years, not 25~50%, as has so often been __6__. And finally, most forms of environmental pollution either appear to have been __7__, or are transient - associated with the early stages of industrialization and therefore best cured not by restricting economic growth, but by __8__ it. One form of pollution - the release of greenhouse gases that causes global warming - does appear to be a phenomenon that is going to extend well into our future, but its total impact is unlikely to __9__ a devastating(令人心神不安的) problem. A bigger problem *y well turn out to be an inappropriate response to it.
Yet opinion polls suggest that *ny people nurture the belief that environmental standards are declining and some factors seem to cause this disjunction between __10__ and reality.