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What two substances does Earth have that allow it to support life?
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What two substances does Earth have that allow it to support life?

User Renaud
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Answer: water + oxygen

Step-by-step explanation:

User New Thrall
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Answer: water and oxygen

Step-by-step explanation:

Thats why its called the blue planet bc its the only planet with life and 71% water

User Sheldore
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