The answer is A. The vibration caused by the waves through the air eventually weaken, which is why sound diminishes easily over distance.
Molecular clocks because the m<span>easure changes in DNA or proteins to indicate degrees of relationship among species.Molecular clocks, together with evidence from the fossil record, allows scientists to estimate how long ago various groups of organisms diverged evolutionarily from one another</span>
Answer:
Electrons
Explanation:
Because the nucleas is In the middle and the Electrons surround it
