The Bible says that God created the animals before He created man. It does not say He created eggs! God formed man from the earth; he was not a sperm first. Eve came forth from Adams rib. Again, no sperm. After creation, animals and humans mated to produce eggs for their species, which then developed in either eggs or wombs. Of course if you're an atheist, none of this means anything to you. Faith in the Scriptures is a wonderful thing. By the Way, after the flood, Noah had to start over again with two of each kind. The Bible does not say he brought aboard the ark any eggs, just animals of all kinds.
Think about it!