Ask your own question, for FREE!
Biology 13 Online
OpenStudy (anonymous):

Which of the following animals has a body covering that allows for the diffusion of oxygen and carbon dioxide? (1 point) clams flatworms whales trout

OpenStudy (anonymous):

flatworms,i guess

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!