Before the Ordovician-Silurian extinction, the diversity of life on Earth was growing enormously due to _____.
1.shallow, warm, continental seas
2.overpopulation of land forests
3.cold, glaciated oceans
4.unknown reasons
5.comets hitting the earth
1.shallow, warm, continental seas
2.overpopulation of land forests
3.cold, glaciated oceans
4.unknown reasons
5.comets hitting the earth