<span>c. regular exercise has little impact on maintaining peak performance after age 30</span>
Stars are classified based on the spectral type (i.e. a means to measure the photospheric temperature and density by getting information about the ionisation state).
Under the Morgan–Keenan (MK) system using the letters O, B, A, F, G, K, and M, a sequence from the hottest (O type) to the coolest (M type) (Harvard Spectral classification based on the surface temperature of the stars). A luminosity class is added to the spectral class using Roman numerals (Yerkes Spectral classification). This is based on the width of certain absorption lines in the star's spectrum (0 or Ia+ - hypergiants, I - supergiants, II - bright giants, III - regular giants, IV - sub-giants, V - main-sequence stars, sd - sub-dwarfs, and D - white dwarfs).
Answer:
forced people to improve their morals.
Explanation:
The prohibition prevent people from consuming alcohol , which is dangerous for their health and overall well-being so it is automatically improving the morals of the people by forcing people not to consume alcohol. This question refers to the law that 'prohibited' people from consuming alcohol, since it is not an awareness campaign but a law that tried to improve the morals of the people so it is a <u>Noble experiment</u>.
