After 1995, the growth of willows increased in parts of Yellowstone, identify a possible cause for this trend. 1.Increase in the wolf population, decreased the elk population, which increased the willow population.

2.Increase in wolf population directly increases the willow population.

3.Increase in wolf population, increased the elk population, which increased with willow population.

4.Increase elk population created more feces (poop) to fertilize and increase the willow population.

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

cutt.ly/XzW3SUN

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.