What Is the Cause of Canada's Arctic Deserts Like Those

question 92

Multiple Choice

What is the cause of Canada's Arctic deserts like those on Cornwallis and Ellismere Islands?

• A)permanent high pressure and dry north polar easterlies
• B)a rainshadow from the Mackenzie Mountains in the Northwest Territories
• C)overgrazing by musk oxen and melting of the Arctic ice cap
• D)subtropical high from the descending limb of the Tropic of Cancer's Hadley cell

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Definitions:

Variable-Ratio Schedule

A reinforcement schedule in which a response is rewarded after an unpredictable number of responses, making the reward random.

Fixed-Ratio

A type of reinforcement schedule in operant conditioning where a response is reinforced only after a specified number of responses have occurred.

Discriminative Stimulus

In behavioral psychology, a stimulus that signals the availability of reinforcement or punishment, guiding the organism's responses.

Reinforcer

Something that increases the likelihood of a behaviour by either presenting a positive stimulus or removing a negative one following the behaviour.