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kenny6666 [7]
3 years ago
13

Environmental stresses at high altitudes include A. increased temperatures. B. lower humidity. C. decreased UV radiation. D. qui

ck ascent.
Health
2 answers:
pashok25 [27]3 years ago
3 0
Its either a or c .....
Anvisha [2.4K]3 years ago
3 0
I think it's B and C because a and c don't make sense because if there is higher temperatures it'll be more sun so you'll need sunglasses which protect you from UV radiation. It won't make sense so pick B or C.
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Answer:

<u><em>fixed-ratio</em></u><em>;   </em><u><em>variable-ratio </em></u>

Explanation:

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<em>The number of responses expected continues to be constant.</em>

A variable-ratio schedule is a reinforcement schedule where an unknown number of responses reinforce the response. <em>This routine produces a reliable, high response rate. </em>

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