A. the small amounts of nitrogen
B. the rapid increasing amounts of carbon dioxide
C. growing plants
Chọn B
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Complete each of the following sentences with the correct answer (A, B, C or D). Identify your answer by writing the corresponding letter A, B, C or D on your answer sheet.
Nathalie seems very tough at work. She’s a different person at home, _________.
The Mediterranean is warm, whereas the North Sea is much colder. (NOTHING)
The North Sea is ____________________________________________ the Mediterranean.