Which is a true statement about electromagnetic waves?

a. even though you cannot feel them, you are always being showered by them.
b. you can always feel them interacting with you.
c. electromagnetic waves are never dangerous.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.