I think it is true because musicians do have to know their instrments and they have to know how to play it how to read the music or if you sing there is a lot more to it. and with athletes they have to have good strength and they have to understand whatever sport they play.
The work output of a machine divided by the work input is the resistance of the machine
The producers at the beginning of the Earth's food chain are plants.
<span>The lab equipment used to allow for the growth of microorganisms without the aid of oxygen are petri dishes. They are air-tight, short, round disk shaped dishes with a lid.</span>
<span>The ability of water to hold more heat than land keeps the temperature on earth moderate
If the oceans didn't hold large amounts of heat, then the Earth would probably overheat which would cause many problems for all life forms.</span>
