Biology 1-8 cumulative

Last update by dangkathy04 on 05/03/2014
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About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 1) elements make up approximately 96% of living matter?

A) carbon, oxygen, phosphorus, hydrogen

B) carbon, oxygen, nitrogen, calcium

C) carbon, sodium, hydrogen, nitrogen

D) oxygen, hydrogen, calcium, nitrogen

E) carbon, hydrogen, nitrogen, oxygen

Answer:
E) carbon, hydrogen, nitrogen, oxygen

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