Which of the following correctly identifies the producers in the forest food web shown below?

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?

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

If you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.