Environmental Science
Which of the following groups is absolutely essential functional component of the ecosystem?

Producers and detritivores
Producers and herbivores
Producers
Detritivores

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Environmental Science
The primary cause of a radiation inversion is:

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

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