What physiological (body) factors might cause one to get more squeezes, in other words, to have
fatigue? (hint: consider how the reactants of aerobic respiration get to your musde cells)

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.