Environmental Science
Mycorrhiza represents

Parasitic association between a fungus and roots of plants
Symbiotic association between a fungus and liverworts
Symbiotic association between a fungus and roots of higher plants
Parasitic association between a fungus and an alga

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Environmental Science
The primary cause of a radiation inversion is:

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

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