Charles Darwin observed a unique beak size and shape in the finch population of each of the Galapagos Islands that he visited.

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.