Please provide more details to your questions!
The third one is incorrect.
A plant releases oxygen during photosynthesis not carbon dioxide.
Hope this helps.
Farms productivey and native ecosystem
Answer:
There could be chemical reactions like indigestion, fermentation, putrefaction and gas formation and, if prolonged, can lead to toxemia and disease.
Explanation:
The best answer would probably be D, because they'd need the enough land or they wouldn't even be able to think about building it.