In the formation of earth's atmosphere throughout its history, each of the following gases have, at one time or another, been the dominant gas in the atmosphere, except
a) oxygen.
b) nitrogen.
c) water vapor.
d) carbon dioxide.

What element does susan b. anthony include in this passage to strengthen her argument?

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

Write the balanced chemical equation forphotosynthesis.