Ask your own question, for FREE!
Biology 7 Online
OpenStudy (anonymous):

Egg-laying land animals have evolved to produce eggs with tough shells to ensure that -external fertilization can take place -the egg and the sperm can fuse -parental care is unnecessary -the developing embryo does not dry out

OpenStudy (anonymous):

i think its a

OpenStudy (beccaboo333):

http://en.wikipedia.org/wiki/Egg I'm pretty sure it's D

OpenStudy (beccaboo333):

Read the link

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!