The main reason why fish with lungs and gulp air are not grouped with ''amphibians'' is because
a) they are not vertebrates
b) they do not have lungs
c) they do not have teeth
d) they do not have 4 appendages
e) they do not have scales

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers

What advantages does a pedigree have over a written passage?

What is gene expression control that occurs after the generation of rna