Why is it commonly believed that carbon dioxide is responsible for global warming? Carbon dioxide levels in the Earth's atmosphere have been steadily decreasing.
O Carbon dioxide has a longer average lifetime in the atmosphere.
O The warming effect associated with carbon dioxide has remained unchanged.
O Other greenhouse gases amplify the effect of carbon dioxide.

The correct answer is

Explanation:

Carbon dioxide has a longer average lifetime in the atmosphere.

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answer is 1935

because gandhi led a march the sea in 1930 and 5 years later he did it again

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;