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Question
Which two minerals are not needed by the majority of plants but needed by almost all animals?
Options:
A .  Carbon and Calcium
B .  Sodium and Magnesium
C .  Oxygen and Nitrogen
D .  Sodium and Iodine
Answer: Option D
:
D
Sodium and Iodine are not needed by the majority of plants but very much needed by almost all animals. Deficiency of iodine causes the thyroid gland to swell up and cause problems. Sodium is essential in transferring nerve impulses across neurons.

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