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1. The gas that is put into the atmosphere by burning fossil fuels is
A
methane
B
carbon dioxide
C
nitrous oxide
2. Scientists predict that by 2050,
A
there will be an extreme drought
B
the Earth will be too hot to live on
C
the Arctic ice will be completely melted
3. One easy way to prevent climate change is
A
eating less meat
B
eating more meat
C
driving shorter distances
4. The excess of atmospheric carbon dioxide is caused by
A
an excess of greenhouse gases
B
burning fossil fuels
C
carbon dioxide