How did Wignall calculate the killing power of th

外语类 已帮助 人

How did Wignall calculate the killing power of those older volcanic eruptions?

A.By estimating how long they lasted.

B.By counting the dinosaurs they killed.

C.By studying the chemical composition of lava.

D.By comparing the proportion of life wiped out with the volume of lava produced.

热搜:th1细胞产生的对巨噬细胞活化起重要作用的细胞因子