Air does have weight. 14.7 psi in fact. Most of the air is Nitrogen gas, which is 2 atoms of nitrogen. There is also Oxygen gas (O2). Finally there is Carbon Dioxide (CO2). There is also a small percentage of other gasses, but they are insignificant.
Answer:
A
Explanation:
The sun is what drives most processes, the sun gives energy to the plants which help them grow resulting in creatures consuming the plants. The sun is the major source so remeber that! :D
I am sure this is the answer so I hope this helps you!
Answer:
The carbon in the air will lessen over time. This is because it is being trapped in the walls of the biodome. This will affect living things negatively as the carbon cycle is a necessary part of nature and throwing off the balance of carbon in the carbon cycle will throw off the balance of the entire ecosystem within the biodome.
It would be C but its been a while since i took this class so sorry if im wrong but im 80% sure its C
Iron, oxygen and water react with the iron creating a substance known to us as rust.
Hope this helps.
