2006-11-28 06:26:28 · 5 answers · asked by random r 1 in Science & Mathematics ➔ Biology
The Earth's primitive atmosphere was much different from today's and consisted primarily of ammonia, methane, and trace amounts of carbon dioxide and water vapor. There was little, if any, free oxygen present.
2006-11-28 06:35:35 · answer #1 · answered by pbuchta 3 · 0⤊ 0⤋
In the most generally held theory of the origin of the solar system, the sun and planets are supposed to have condensed from a dust cloud having the same average composition as the universe. The cosmic abundances of a selection of elements show that hydrogen and helium are by far the most abundant, followed by Oxygen.
2006-11-28 06:37:49 · answer #2 · answered by jason e 2 · 0⤊ 0⤋
What are the main substantial gases in Earth's decrease environment a. nitrogen and oxygen Salinity has a tendency to be above easy b. the place great rivers enter the sea oceanography is composed of numberous scientific fields including d. all the above the learn of prehistoric life is named a. biology
2016-12-29 15:12:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋
CH4 methane
NH3 ammonia
H2 hydrogen
H2O water vapor
(No carbon dioxide or oxygen)
2006-11-28 10:51:07 · answer #4 · answered by ursaitaliano70 7 · 0⤊ 0⤋
maybe hydrogen?
2006-11-28 06:31:27 · answer #5 · answered by Anonymous · 0⤊ 0⤋