Does anyone know what purebred means  i am   in biology need

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Glycogen is an energy-storage molecule in humans. a hormone that is called insulin controls the storage of glycogen in the liver. insulin is made up of amino acids.

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?