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Armosphere
Question | Answer |
---|---|
What did the earliest atmosphere contain? | Hydrogen and helium |
What reduces the amount of oxygen in the atmosphere? | Oxidation of metals and minerals |
What reduces carbon dioxide in the atmosphere? | Photosynthesis |
What are good insulators that trap heat and will cause global warming? | Water vapor, carbon dioxide and clouds |
What does volcanic eruptions decrease? | Temperatures |
Which planet(s) have no atmosphere? | Mercury and Mars |
What is the percentages of the Earth's current atmosphere? | 78% nitrogen, 21% oxygen and 1% trace gases |
What can change the composition of the atmosphere? | Human activity |
The ability to hold it is the ____ _____. | Greenhouse effect |
How does meteors impact the atmosphere? | Place huge amounts of dust in the air and can set off forest fires and increase the amount of volcanic eruptions. |