Make the connection between graphs A-G and H. Why did the bison population increase after the wolf reintroduction? graph4

Question 7 options:

When the biodiversity increased, the humus soil layer increased which helped support the growth of vegetation.

Wolves culled or preyed upon the weak bison contributing to a stronger bison herd.

The bison had more grass and vegetation to eat because the herbivore populations were better kept in check.

All of the above scenarios are correct, but the graphs are pointing to a correlation between increased plant growth and bison success.