Which is involved when a doppler effect is produced?

change in amplitude

change in frequency

change in wavelength

What is the difference between an igneous, sedimentary and metamorphic rock

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants. d- food molecules are broken down in the cells if living things.

The carrier molecules of the electron transport system are located in the