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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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gi.x3 gi.x3
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6 years ago
The very earliest forms of life probably ________.
 
  A) required an external food supply
  B) manufactured their own food supply by photosynthesis
  C) manufactured their own food supply by chemosynthesis
  D) were similar to present-day anaerobic bacteria
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meek2199meek2199
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6 years ago
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gi.x3 Author
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6 years ago
Smart ... Thanks!
dearsophia21
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Yesterday
Correct Slight Smile TY
jamesbove
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2 hours ago
This site is awesome
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