Hans buys a bag of fertilizer at the store. it reads 30-15-10. how much nitrogen is in the fertilizer? 30% 15% 10%

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves