Darwin noticed many differences in the body structures of Galapagos finches as he traveled from island to island. These differences was caused by differences in that environment on a very silence. What is the process of changing it better fit with the environment called?

What are four key elements of the study of economics?

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils