Which structures are most similar in birds and mammals based on their functions? air sacs in birds and rib cages in mammals
air sacs in birds and mammary glands in mammals
gizzards in birds and teeth
crops in birds and teeth in mammals
mammals

Someone me with this: a mineral' is determined by its actomic structure.

What element is able to combine with itself and hydrogen to form large molecules ?

Neeed now for 1. eye color is a polygenic trait. what is the possibility of getting a green (aabb) eyed child, if parent 1 has brown eyes (aabb) parent 2 has blue eyes (aabb) 2.albinism is a recessive trait. having normal pigment is the dominant trait. what is the possibility of having an albino child if parent 1 is heterozygous normal parent 2 is heterozygous normal 3.in rabbits black fur is dominant over white fur. what is the probability of getting a rabbit with black fur if parent 1 is heterozygous black parent 2 is homozygous white