Nhận biết (M1)

Scientists studying marine ecosystems were surprised by the extent of internal carbon recycling by red coralline algae. While some __________ of carbon was expected, the scientists found that the algae reabsorb nearly 40% of the carbon dioxide they produce during calcification processes and harness it for photosynthesis.

Which choice completes the text with the most logical and precise word or phrase?

• A.

  reuse

• B.

  imitation

• C.

  supply

• D.

  examination