Which statement is true concerning light?
frequency and wavelength mean the same thing
as frequency goes up, wavelength does down
light has frequency but no wavelength
light has wavelength but no frequency

the answer is: metamorphic rocks often show the presence of fossils, also a

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-lavira: )

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.