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What are the 4 main elements that living things are composed of? (select

all that apply)
Magnesium
Oxygen
Helium
Hydrogen
Carbon
Nitrogen

2 Answers

4 votes

Answer:

Oxygen

Hydrogen

Carbon

nitrogen

Step-by-step explanation:

User Zrax
by
5.5k points
2 votes

Answer:

carbon, oxygen, nitrogen and hydrogen

User Mdnghtblue
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5.6k points