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
Thermal belts are:

Warmer hillsides that are less likely to experience freezing conditions
Pockets of cold air resting on a valley floor at night
Cold, below-freezing air found at the top of a mountain
Pockets of warm air resting on a valley during the afternoon

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