Question

Imagine that an ecosystem contains rabbits, foxes, wolves, and deer. The following predator-prey relationships exist:
Rabbits are eaten by foxes and wolves
Deer are eaten by wolves
Foxes are eaten by wolves
Select the animal whose absence would have the greatest negative effect on the ecosystem.
(1 point)
deer
wolf
rabbit
fox

Question 2
Question 3
A) In an ecosystem with low biodiversity, the removal of a species will (1 point)
not affect the ecosystem because another species will not be able to replace it.
disturb the ecosystem because another species will take its place.
not affect the ecosystem because another species will take its place.
disturb the ecosystem because another species will not be able to replace it.
A) Biodiversity is measured by (1 point)
counting the total number of one species population and how they interact within an ecosystem.
counting the number and variation of different species of plants, animals, and other organisms that interact within an ecosystem.
examining the usefulness of a specific trait in a species that interacts within an ecosystem.
only analyzing animal species that interact within an ecosystem.

Question 4
A) Which statement best describes ecological health? (1 point)
Ecological health concerns the relationship among ecosystems, ecosystem services, and human health.
Ecological health concerns the relationship between ecosystems and ecosystem services.
Ecosystem biodiversity determines ecological health via the types of different organisms in the area.
Ecosystem biodiversity determines ecological health via the amounts of different organisms in the area.

Answer 1

1) wolf — Wolves are the apex predator here; removing them would cause cascading effects (mesopredator release, herbivore imbalances).

2) disturb the ecosystem because another species will not be able to replace it.

3) counting the number and variation of different species of plants, animals, and other organisms that interact within an ecosystem.

4) Ecological health concerns the relationship among ecosystems, ecosystem services, and human health.