<u>" D is correct answer."</u> Macromolecules its describes both collagen and hemoglobin." "Hope this helps!" "Have a great day!" "Thank you for posting your questions!"
Answer:
These diagrams, called the Hertzsprung-Russell or HR diagrams, plot luminosity in solar units on the Y axis and stellar temperature on the X axis, as shown below.
Explanation:
The Doppler effect can be experienced when an ambulance is approaching you. Due to the ambulance moving closer to you, the gap between the wavelengths is decreased, leading to you hearing the siren at a much higher frequency than when the ambulance has passed you! Hope this helps!
Science relies primarily on empiricism, the premise that knowledge should initially be acquired through observation.