Debbie has a widow’s peak hairline because of her. a
Genes, which are located in chromosomes in her cells' nuclei.
b
Environment, in which it is an advantage.
c
Nutrition, and indicates her needs are met.
d
Hormones, which are passed on from previous generations

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