Answer:
Cause: human
Solution: evolution
The hunters chose to harvest the sheep with the larger horns. Only smaller horned sheep survived and reproduced, so, over time the population had smaller horn size.
Explanation:
The trophy hunting (the bigger the better) on bighorn sheep has caused artificial evolution. The human selection (and killing) of sheep with large horns has led to the survival of sheep with smaller horns. It is a form of <em>artificial evolution </em>because in <em>natural evolution </em>bigger horns means to be better armed.
Its the 3rd one. they made terraces in the mountains to create more farmable land
The Cultural Revolution was a wildly complex program that failed for a variety of complex reasons, but the best option from this list is "<span>people began to seriously question communism"</span>
Louis Kossuth led Hungarian to revolt