What is the relative abundance of oxygen in the atmosphere

In a repredentive democracy: a.) people come together in large meetings to vote on public policy b.) the people govern themselves c.) political power is held by a small group of people d.) people elect officials to run the government for them

What would be the distance of all the planets to the sun in astronomical units?

Which descriptions refer to cirrus clouds? check all that apply. are fluffy are wispy produce snow form at high altitudes form from ice crystals