What is natural history

What is one way in which a discovery that is made by using cell technology could change existing scientific knowledge? a. a discovery could lead to a change in experimental methods. b. a discovery could lead to a replacement of a scientific theory. c. a discovery could lead to a new brand of cell culture medium. d. a discovery could lead to a new material for culture flasks.

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

What factors contribute to the effect an environmental toxin has on the human body?