Multiple Choice
Experiments have shown that even if it is supplied by no other means, plants near the ocean can get enough of one of the following essential micronutrients from the air, and also from sweat from a person's hands. Which of the following is that macronutrient?
A) manganese
B) chlorine
C) magnesium
D) sodium
Correct Answer:

Verified
Correct Answer:
Verified
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