Judge the following sentence according to the criteria given below: The melting of Arctic sea ice by rising temperatures is an example of a positive-feedback loop BECAUSE particulate air pollution has a shading effect

A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct, but the reason is incorrect.
D) The assertion is incorrect, but the reason is correct.
E) Both the assertion and the reason are incorrect.


B

Environmental & Atmospheric Sciences

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Indicate whether the statement is true or false

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The power expended when a barbell is raised 2.0 m in 2 s is

A) 1 W. B) 4 W. C) 8 W. D) dependent on the mass of the barbell.

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Indicate whether the statement is true or false

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Indicate whether the statement is true or false

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