the answer is D: oxygen, how did u not know that?
Amf vold air sinks near the poles.
-Cumulus
- Stratus
- Cirrus
As a little interesting fact: Nimbus
I hope this helps! :)
Answer:
cell wall
Explanation:
cell wall provide support for plant
This isn't possible except you have a system where there isn't competition and the survival of the fittest in the aspect of the food chain
