The level of acidity in the ocean is increased by ________. A. the loss of acidity in the atmosphere around the earth B. the decrease of acidity of the pole waters C. the extinction of s

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The level of acidity in the ocean is increased by ________.

the loss of acidity in the atmosphere around the earth

the decrease of acidity of the pole waters

the extinction of species in coastal areas

the rising amount of carbon dioxide entering the ocean.

Giải thích

Cuối bài nhắc tới CO₂ là một tác nhân gây nên sự tăng độ acid của nước biển: “increasing carbon dioxide...increase the acidity of ocean waters.”