Question

16. Which gas is used by the green
plants to make their food? *
O A. Oxygen
O B. Carbon dioxide
O C. Nitrogen
D. Helium​

Answer 1

Answer:carbon dioxide

To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. for photosynthesis. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food.

Explanation:

Answer 2

Answer:

B) carbon dioxide

The oxygen in air is used by the organisms present in air, water or soil or on earth for their respiration. During respiration carbon dioxide gas is released to air. But green plants during photosynthesis use carbon dioxide of air for preparing food and they release oxygen gas in the air.