Which physical property of a medium is defined by how close the particles of the substance are to each other?

i am going to guess that it is co2.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy

bacterium is not correct

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.