A-A+
What aspect of the fossil record is this lectu
问题详情
What aspect of the fossil record is this lecture mainly about？
A．The impact hypothesis
B．Mass extinctions
C．Climate change
D．Diversity in species请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：The other points relate to the main topic of the lecture: Mass extinctions.
