The amnion is an extra-embryonic membrane that surrounds the embryo and encases it in amniotic fluid.

which animal lacks an amnion?
a) frog
b) lizard
c) pigeon

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided