Environmental Science
Mycorrhiza represents

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

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Environmental Science
Which of the following statements is not correct?

The relative humidity is a measure of the air's actual water vapor content.
The length of human hair changes as the relative humidity changes.
A change in the air temperature can change the relative humidity.
During the winter, low relative humidity can irritate the mucus membranes in the nose and throat.

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