Answer:
Crabs, lobster, shrimp, etc.
Explanation:
There are sometimes similarities in the embryonic stages of organisms that do not exist in the adult stages.
The answer is stratosphere...
Explanation:
heat (metal or glass) and allow it to cool slowly, in order to remove internal stresses and toughen it.
OR
recombine (DNA) in the double-stranded form following separation by heat.