In the drawing above the distance from the ground to the floor of the trailer is 20 inches. the length of the ramp is 60 inches. what is the mechanical advantage of this simple machine?

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.