问题详情

It can be concluded that________
A.raising the world’s temperature only a few degrees would not do much harm to life on earth
B.lowering the world’s temperature merely a few degrees would lead many major fann-ing areas to disaster
C.almost no temperature variations have occurred over the past decade
D.the world’s temperature will remain constant in the years to come请帮忙给出正确答案和分析，谢谢！