Environmental Science
_________ is a practice of clearing and burning the forest area for cultivation of crops for 3-4 years and shifting.

Horticulture
Taungya cultivation
Jhum cultivation
Agrisilviculture

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Environmental Science
Frost forms when:

The dew point is 32oF or below.
Water vapor changes into ice without first becoming a liquid.
All of these
Objects on the ground cool below the dew point temperature.

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