Use the Graphs to Answer the Following Question

question 12

Multiple Choice

Use the graphs to answer the following question.
(a)


(b)


Graph (b) in the figure shows the normal fluctuations of a population of grouse, a ground-nesting bird. Assuming graph (a) in the figure is the result of some experimental treatment in the grouse population, what can be concluded?

• A) The experimental treatment intensified the population cycling.
• B) The experimental treatment did not affect population cycling in this species.
• C) The experimental treatment has most likely identified the cause of population cycling.
• D) The experimental treatment involved the introduction of a predator of the bird.

---

Definitions:

Myelin

A fatty white substance that surrounds the axon of some nerve cells, forming an electrically insulating layer that speeds the transmission of nerve impulses.

Axon

A long, slender projection of a nerve cell that typically conducts electrical impulses away from the neuron's cell body.

Negatively Charged Ions

Ions that carry one or more negative electric charges, known to affect environmental and physical health, often found abundantly near waterfalls, forests, and after thunderstorms.

Neuron

A specialized, electrically excitable cell that processes and transmits information through electrical and chemical signals.