Environmental Science
What is edge species?

The species which occur abundantly in the ecotone
Species on the verge of extinction
Endemic species
Rare species

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Environmental Science
The wind-chill factor:

Takes into account humidity and air temperature in expressing the current air temperature
Relates body heat loss with wind to an equivalent temperature with no wind
Indicates the temperature at which water freezes on exposed skin
Tells farmers when to protect crops from a freeze
Determines how low the air temperature will be on any given day

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Environmental Science
Mycorrhiza represents

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

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