A: the causes and projected effects of global warming
B: global warming
C: the effects of global warming
D: the causes and effects of global warming
Đáp án là D. Causes: the burning of large amounts of fossil fuels, such as coal and oil, which release gases that trap heal in the atmosphere.
Effects: World temperatures already have increased this century by about 6 degrees Celsius and are projected to rise by between 1.6 degrees and 3.8 degrees by 2100
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