Question

what is the purpose of hard shells for egg laying land animals

Answer 1

They are hard in order to protect the young. This prevents predators from eating them, and the shalls have a little protection from other things. The harder the shell, the more chance of surviving the animal has until it hatches.

Answer 2

sort of

Answer 3

think about it, instead of giving birth to live young or laying eggs in water which is a natural comforter; laying eggs on dry ground (despite predation) poses a serious issue: the sun

Answer 4

the sun and UV radiation can seriously damage the embryo inside

Answer 5

the shell exists like a cell wall to protect whats inside

Answer 6

besides, scavengers can easily break into a shell