The Controversy Involving the Decline of White Pine Trees (Source

question 36

Multiple Choice

The controversy involving the decline of white pine trees (source of a major part of the grizzly bears' diet) is based on:

• A) the popularity of the grizzly bears compared to their destruction of the local forest community.
• B) the fact that global warming and ozone depletion are responsible for the trees' decline.
• C) the exotic nature of the fungus that is killing the trees.
• D) the provision of the Wilderness Act that intentional ecological management will be avoided.
• E) None of these statements is true

---

Definitions:

Absolute Threshold

The minimum intensity at which a stimulus can be detected 50% of the time.

Sensory Ability

The capacity to perceive and process stimuli through the senses.

Vision

The ability to perceive the environment through light in the form of images interpreted by the brain via the eyes.

Blindsight

A condition where individuals can respond to visual stimuli without consciously perceiving them, typically as a result of damage to the primary visual cortex.