Environmental Science
What is desertification?

Conversion of forests into desert
Conversion of grassland into desert
All of these
Conversion of croplands into desert

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Environmental Science
When a liquid thermometer is held in direct sunlight,

It will measure a much lower temperature than that of the air
It will accurately measure the air temperature
It will measure a much higher temperature than that of the air
It will measure the temperature of the sun rather than the air

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