How can a hydrogen atom become either an ion or a part of a molecule?

How do you date a sample of rock that you suspect as being one of the earliest on earth

Explain the significance of thesaurus geographicus

Abiology teacher asks students to give examples of genetic variations that support the idea that changes in a population’s environment affect genetic variation. which is the least supportive example? a.changes in genetics in human populationsb.antibiotic resistance in bacteria populationsc.pesticide resistance in garden insectsd.changes in the color of the peppered moth population in england