Why might polar bears become extinct

"i know there may have been concerns that it may be too vague or too costly, or may lead endlessly to litigation. but i want to reassure you right now that my administration and the united states congress have carefully crafted this act. we've all been determined to ensure that it gives flexibility, particularly in terms of the timetable of implementation, and we've been committed to containing the costs that may be incurred. let the shameful wall of exclusion finally come tumbling down." president george h.w. bush, july 26, 1990 the act president bush speaks of was enacted to guarantee equal rights to people of all races. people of all sexes. eliminate people who are homeless. people with disabilities.

Under a tyranny the power to make a political decision is in the hands of a

How did ancient civilizations develope its agriculture and protect its population