Can there be eggs if there were no pigeons?

Can there be pigeons if there were no eggs?

Is egg first or pigeon ?

Eggs of frog are

Drop an egg in a beaker of water. Now drop the same egg in another beaker of water in which excessive salt is added. Write your observation.

Which of the following situations correctly describe the similarity between an angiospermic egg and a human egg? (I) Eggs of both are formed only once in a lifetime (II) Both the angiosperm egg and human egg are stationary (III) Both the angiosperm egg and human egg are motile transported (IV) Syngamy in both results in the formation of zygote Choose the correct answer from the options given below

The eggs of frog are coated by