Idk if your asking what the oldest political party is but I'm assuming you are so,
Federalist is the oldest party in the US. They eventually become the democrats.
You can find the elevations by finding the contour interval and each line up count up
Answer: Carbon Dioxide
Explanation: Soil aeration is the process that provides the air to the plants and maintains the flow of oxygen and carbon dioxide gases. These are the two most vital gases for the life process of the soil to provide it to the plants and other micro organisms. It provides these gases so that there can be production in the plant through soil.