The three primary plant nutrients are
A) phosphorus, nitrogen and calcium.
B) phosphorus, potassium and nitrogen.
C) magnesium, phosphorus and nitrogen.
D) calcium, potassium and magnesium.
Question 2
A lake that has a foul odor has most likely undergone
A) aerobic decay.
B) anaerobic decay.
C) eutrophication.
D) parthenogenesis.