Which of the following could be responsible for the most recent warming trend in the northern hemisphere?

A. increase in levels of CO2
B. increase in volcanic eruptions
C. light-coloured particles in the stratosphere
D. decrease in energy emitted by the sun


Answer: A

Environmental & Atmospheric Sciences

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Fill in the blank(s) with correct word

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What kinds of power systems could be used as backups for solar heaters in the event of bad weather?

What will be an ideal response?

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