Egg-laying land animals have evolved to produce eggs with tough shells to ensure that
1 external fertilization can take place.
2 the egg and sperm can fuse
3 parental care is unnecessary***
4 the developing embryo does no dry out
What are the other answers
It's I think it is 4 the developing embryo does no dry out I am not sure.
I think D and do you like my name?
i agree with forrest, if you look at the stanford page, it shows that the eggshell prevents the embryo drying out
nope
i want answers