Reproductive separation may result in the
of two different species.

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

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions

How can you tell the difference between rough er from smooth er?