Changing environments or major historical events.
Macroevolution (I think).
macroevolution Explanation: Large-scale evolutionary trends are the result of macroevolution.
Large-scale evolutionary trends are the result of macroevolution. Understanding macroevolution is important because it explains both the diversity of life and the rate of evolutionary change.
Explanation of macroevolution:
Answer 6
Large-scale evolutionary trends are the result of macroevolution.