Wolves, which are top predators, were eliminated from Yellowstone National Park in the 1930s. In 1995, wolves were reintroduced into Yellowstone. During the period in which wolves were absent from Yellowstone, which most likely occurred? Select one:

a greater balance of predator-prey relationships

an increase in the population of tertiary consumers

an increase in competition for food resources among small prey

a greater opportunity for primary producers to flourish

Explanation:

Once the wolves were gone, elk populations began to rise. Over the next few years conditions of Yellowstone National Park declined drastically. ... The park service started trapping and moving the elk and, when that was not effective, killing them. Elk population control methods continued for more than 30 years.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project