问题详情

What is the difference between today"s ecological change and the five changes in ancient times？
A．Species like the dinosaurs brought the ice ages to an end.
B．A volcanic eruption might lead to a great catastrophe.
C．Today"s change is mainly caused by agricultural advances.
D．Today"s change attributes to a multitude of reasons.请帮忙给出正确答案和分析，谢谢！