Which organism was most likely to live st the same time as brachiopods

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

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