Which system of grouping in Figure 18-2, A or B, provides information about the evolution of the three animals?

Did you know that a blue wales tongue weighs more than an elephant?

In the practice of science, this type of reasoning is used to develop explanations.

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