Reaction and response loop. The plant is reacting to the amount of water, therefore it begins to die from there being less of it. The response from the plant dying means the answer. I'm not sure about this, but here is my answer that I would give.
Answer:
A they have increased dramatically
Explanation:
As the time progresses it was relatively stable until about 1800, and then the atmospheric CO2 increased dramatically
Answer:
Explanation:
Turn off the fan when you leave a room.
Close your drapes or drop your window shades during the day.
Wash your clothes in cold water.
Wrap or cover foods and drinks in the refrigerator.
Always use the cold water faucet, unless you really want hot water.
I’m not 100% sure but I think it’s 8