Biology 5090 · O Level · Nutrient cycles

Nutrient cycles — practice question

At what point is carbon dioxide taken up, and at what point is it given out, by an ecosystem such as a tropical rainforest?

  • Aabsorbed: darkness; released: darkness
  • Babsorbed: darkness; released: daylight
  • Cabsorbed: daylight; released: darkness
  • Dabsorbed: daylight; released: daylight

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