EOL-Big history

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Where were the oldest fossils found?
Wavy Greenland rock
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How old are the oldest fossils?
3.7 billion years old
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What does Goldilocks conditions mean?
The ideal conditions for life to emerge
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What are the Goldilocks conditions for life to emerge?
-A variety and abundance of chemical elements, - Energy (not too much/too little), - A water environment
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What role did bacteria have in forming the atmosphere?
- Formation of oxygen, - Increased energy potential for more complex organisms including humans
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What can microbes be regarded as?
Ecosystem engineers
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In what ways do microbes change the nature of an ecosystem?
-pH, - Redox potential, - Oxygen tension
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What was Francesco Redi's importance and what year?
1688 - disproved spontaneous generation in sealed flasks, fly experiment
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What was the Pasteur experiment and what year?
1860 - showed that microbial growth occurred with oxygen but not without
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Where is one of the best search targets for extra-terrestrial life?
Europa in the solar system
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Other cards in this set

Card 2

Front

How old are the oldest fossils?

Back

3.7 billion years old

Card 3

Front

What does Goldilocks conditions mean?

Back

Preview of the front of card 3

Card 4

Front

What are the Goldilocks conditions for life to emerge?

Back

Preview of the front of card 4

Card 5

Front

What role did bacteria have in forming the atmosphere?

Back

Preview of the front of card 5
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