Environmental Science
Lead poisoning

increases O2 carrying capacity of hemoglobin in blood
reduces O2 carrying capacity of hemoglobin in blood
reduces O2 carrying capacity of myoglobin in muscles
increases O2 carrying capacity of myoglobin in muscles

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Environmental Science
At night, low clouds:

Are often caused by the atmospheric greenhouse effect
Weaken the atmospheric greenhouse effect
Have no effect on the atmospheric greenhouse effect
Enhance the atmospheric greenhouse effect

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Environmental Science
The primary cause of a radiation inversion is:

Infrared radiation absorbed by the earth's surface
Infrared radiation emitted by the earth's surface
Infrared radiation absorbed by the atmosphere and clouds
Solar radiation absorbed by the earth's surface
Solar radiation reflected by the earth's surface

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