Question

Wolves prey on elk, bison, and occasionally livestock. Many years ago, the government took steps to reduce the wolf population. However, in the absence of wolves, the prey populations increased disproportionately, causing a decline in the population of plant species. This decline disrupted the ecosystem. Following a study of the wolves’ impact, ecologists regarded wolves as the _________of the ecosystem, as their absence caused a __________ effect on the ecosystem.
For the first blank here are the choices:


- keystone species


-prey species


- diverse species



These are the choices for the second blank:


- beneficial


-domino


-direct



If you could help me out asap, that would be great! Thank you so much! ^_^

Answer 1

Keystone species for the first blank. This is because keystone species are what holds an ecosystem together. 

direct impact because the removal of a keystone species is neither beneficial or a domino effect. if the entire ecosystem relies on that one species, then the niches of all the animals in that ecosystem will be directly affected. 

Answer 2

Answer:

keystone and domino for plato

Explanation:

just did it on plato