Asap why is it important important to know about watersheds? explain well pls

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

Someone me with this: a mineral' is determined by its actomic structure.

Which of these is not a nucleotide base found in dna?