The anwser is C. <span>Purple or triangle on odysseyware</span>
Answer:
experiment
Explanation:
When you are controlling the conditions it is called an experiment.
<span>I believe it was 300 BC.</span>
Answer:
greenhouse gases
Explanation:
all gases whose have three or more greenhouse gases :carbon dioxide (CO2), methane (CH4) and water vapor (H2O)
