Clemson's onside kick went out of bounds. Coker took a knee and after a two-year drought that felt like eternity in Tuscaloosa, Alabama was back on top. The Crimson Tide became the second team in college football's poll era, dating back to 1936, to win four titles in seven seasons.
The Problem With Monocultures The problem with monocultures, Wetzel said, is that if an insect likes the crop, that insect has a large food supply to draw from all in one place. Conversely, a field containing a variety of plants does not offer a large block of food for the insect, so it will not get the nutrients it needs to survive and thrive.
Monoculture and the Irish Potato Famine: cases of missing genetic variation. Lack of genetic variation in Irish potatoes contributed to the severity of the Irish potato famine, which devastated Ireland's population and economy.