Excited electrons are those which temporarily occupy a state higher than their ground state
The electron is excited if it is given extra energy, such as when a photon, or packet of light, absorbs it or if it collides with an atom.
The Doppler effect. The farther away the siren gets, the lower the pitch will get.
The correct answer that would best complete the given statement above would be option A. <span>Studies of healthy people indicate that functioning of the human body remains essentially constant until the age of 70 or about 70 years old. Hope this answers your question. </span>
<span>The answer to your question is D. Sea Breeze. Sea breeze is a cool dense air which blows form the sea to the coast it's air which is warmed by the Sun's rays. land breeze is breeze has a reverse direction it blows from coast to sea. Jet streams are fast flowing air currents found in atmosphere of some planets. In Earth's Atmosphere it is found in tropopause which is a boundary between trophosphere and stratosphere. Polar easterly is a dry cold wind which from the high-pressure areas of the polar highs at the North and South Poles towards low-pressure areas within the Westerlies at high latitudes.</span>