Which event is an example of artificial selection? a farmer harvests seeds from all of her different crops. a farmer harvests seeds from only the healthiest plants. weaker lizards are killed off in a sudden snowstorm. stronger lizards survive a sudden snowstorm.

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