Question

from where do the green plants get carbon dioxide​

Answer 1

Answer:

C3 Plants get CO2 from the atmosphere through diffusion through stomata.

C4 plants like maize and jwar have their own mechanism to make proper availability of CO2.

hope it helpd.....

Answer 2

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Humans and animals are the source of carbon dioxide.

When they respirate,they exhale carbon dioxide which further used by the plants in the process of photosynthesis.