after the 1960s, children in rural oaxaca developed shorter, rounder heads and narrower faces. what is this likely related to?

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

segmented body, an exoskeleton made from chitin, and joint appendages.