Which horizon is the most valuable for agriculture?

a. A horizon
b. E horizon
c. B horizon
d. R horizon


Answer: A

Environmental & Atmospheric Sciences

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Which of the following affect the chemical composition of seawater?

A) Sediments B) Marine organisms C) The atmosphere D) Minerals E) The atmosphere, marine organisms, minerals, and ocean sediments

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How much of Earth's primary productivity is used or preempted by humans?

What will be an ideal response?

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What type of melting takes place when a body of hot mantle rock moves upward and the pressure is reduced to the extent that the melting point drops to the temperature of the body?

A. depressurized melting B. mantle plume melting C. exfoliational melting D. subduction melting E. decompression melting

Environmental & Atmospheric Sciences

Which of the following is represented by the eyewall in a hurricane?

A. a region of light winds and low pressure B. the exact centre of the storm C. the area of broken cloudiness at the centre of the storm D. a zone of intense thunderstorms around the centre of the storm

Environmental & Atmospheric Sciences