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Environmental Science

Environmental Science
During the course of a year, the sun will disappear from view near the North Pole on what date?

44097
44188
43911
43831
44003

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Environmental Science
Blue whale is placed under

Endangered
Extinct
Critically endangered
Rare

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Environmental Science
Typically, water vapour occupies about what percentage of the air's volume near the earth's surface?

Less than 4 percent
None of these
Close to 10 percent
About 78 percent
About 21 percent

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Environmental Science
Minute particles and liquid droplets are collectively called

UV radiation
Aerosols
Ozone
Convection current

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Environmental Science
The practical problem in hydrogen production is its

chemical property
weight
atomicity
valency

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Environmental Science
The primary source of energy for the earth's atmosphere is:

Erupting volcanoes
The sun
Latent heat released during the formation of hurricanes
Lightning discharges associated with thunderstorms
Energy from within the earth

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