7. b and 8. c i attached the photo for u to see how i did it
Answer:
The answer is probably hormone
Explanation:
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.
The answer is Prokaryotes.
