Answer :
The necessary elements that supports life forms are :
- Hydrogen ( C )
- Oxygen ( D )
- Carbon ( F )
The three elements readily found in the earth's atmosphere that supports all life forms on earth are ; Hydrogen , Oxygen and Carbon while Glucose is made during respiration.
Hydrogen and oxygen are found in water ( H₂O ) consumed by living other organisms while mammals take in Oxygen during respiration plants require carbon dioxide during photosynthesis.
Hence the three elements that should be considered when creating a planet that supports life just like earth are Hydrogen, Oxygen and Carbon.
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