Which nutrient is the most difficult to break down and, thus, is generally used last for energy in the body?
Carbohydrates
Proteins
Fets
o Water
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Ascientist plants two rows of corn for experimentation.she put fertilizer on row 1 but does not put fertilizer on row 2 both rows receive the same amount of water and light intensity she checks the growth of the corn over 5 months what is the constant in this experiment