Natural selection chooses which variations become prevalent in a population through environmental pressures. which of these is an environmental pressure which can lead to natural selection?

Why do you think the puppy litter was all dark-haired?

The pattern of this wave changes between its beginning and end. what is true about the amplitude and wavelength of the wave when the pattern changes?

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.