Please select the word from the list that best fits the definition An echinoderm that is covered with movable spines and that eats seaweed

sea urchin

sea star

brittle star

sea cucumber

echinoderm

Which of the following is a cost of urbanization? a-cities can provide a high standard of living. b-cities are hubs of entertainment and education. c-paving over land changes the environment. d-job opportunities are greater in urban centers.

Why is excretion necessary to maintain homeostasis?

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x albino a) all chinchilla b) 1/2 chinchilla, 1/2 albino c) 3/4 chinchilla, 1/4 albino