Which element is considered a macronutrient needed by plants?

A. Manganese
B. Iron
C. Copper
D. Potassium
E. Boron


Answer: D

Biology & Microbiology

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If the frequency of a recessive allele is 36 percent,

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A color-blind man and a woman with normal vision whose father was color blind have a son. Color blindness, in this

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