The answer you are looking for is right here, Gogli Apparatus is the answer
Pollination stage is when plant modify the environment just saying I am a 6th grader so like I am not that smart so it might be very wrong
I believe the first answer is #4 and the second is #1. Please correct me if I am wrong.
Answer:
Oxygen is a colourless, odourless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere.
