3 How did scientists determine Earth has layers?
OA. through the use of earthquake waves
OB.
through deep core drilling
Oc. through x-ray analysis
OD. through the use of magnetometers
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where is the diagram?

if you insert the diagram ill be able to you

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.