2. Proponents and opponents of nuclear plants disagree on a number of issues. In particular, the question of safe disposal of nuclear wastes has created strong feelings and considerable conflict. Nuclear power has helped many communities. It provides the additional electricity desperately needed during stress periods such as extremely cold winters and hot summers. Nuclear power has proved to be an important supplement to fossil fuel sources, especially in areas where fossil fuel is scarce.

d is the answer. leo should include the source.

the answer for 3 is b and the answer for 4 is d

the correct answer is a) egypt and china.

egypt and china are two of the world’s oldest civilizations known by man. both ancient empires have left a great historic and cultural legacy to the world through archeology. both civilzations developed complex social relations, had deep religious beliefs, had dominion of agriculture and left writing records to understand their customs and culture.

among the requirements to consider a civilization, we find urbanization, writing records, a place of residence, agriculture methods, technological specialization, means of transportation, currency, population density, social stratification, and political integration.