Over the Last 100 Years,the Number of Elk in Yellowstone

question 79

Multiple Choice

Over the last 100 years,the number of elk in Yellowstone has varied in part because of the limited availability of winter food sources and many types of predators,including wolves (eliminated in 1926 and reintroduced in 1995) ,grizzly bears,coyotes,black bears,and golden eagles.
-The population of elk in Yellowstone

• A)reflects top-down and bottom-up population regulation.
• B)has survived because of the elimination of a keystone species.
• C)would have been more stable if there had only been one predator species.
• D)would be better off if all predators were eliminated from the park.

---

Definitions:

Independence

The state of being self-reliant and free from outside control, or the capacity to make decisions and act on one's own behalf.

Dependence

The state of relying on or needing someone or something for aid, support, or the like.

Retirement Planning

The process of determining retirement income goals, risk tolerance, and the actions and decisions necessary to achieve those goals.

Retirement Decision Making

The process of planning and determining when and how to retire, which can involve financial, emotional, and lifestyle considerations.