Is producers are always the largest level in trophic pyramids

After cloud droplets form, what must happen to them for precipitation to occur?

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer