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Card 6
Front
What produced the gases present in Earth's early atmophere?
Back
Card 7
Front
Which gases were present in Earth's early atmosphere?
Back
Card 8
Front
By what process do algae and plant's produce Oxygen?
Back
Card 9
Front
Write the word equation for Photosynthesis?
Back
Card 10
Front
How did the worlds Oceans form?
Back
Card 11
Front
Why have theories about Earth's early atmosphere developed and changed over time?
Back
Card 12
Front
How did the Oceans reduce atmospheric levels of Carbon Dioxide in Earth's early atmosphere?
Back
Card 13
Front
How did algae and plants reduce levels of Carbon Dioxide in Earth's early atmosphere?
Back
Card 14
Front
What was formed when shells of organisms made using dissolved Carbon Dioxide, fell to the bottom of the Ocean and were covered and compressed?
Back
Card 15
Front
What was formed when plants grew millions of years ago, died and were trapped and compressed under rocks?
Back
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