So sodium and potassium move by active transport using a pump
Glucose moves by a method of passive transport, facilitated diffusion. Ions moving with facilitated diffusion use channels, but a molecule like glucose would use a carrier protein.
1: False. Chemical.
2: False. Endocrine.
<span>The human impact on biological diversity. How
species adapt to urban challenges sheds light on evolution and provides
clues about conservation</span>
People who have darker skin have more melanin which is a black or dark brown pigment in the skin. When we are out in the sun our skin produces more melanin, which helps our skin be more resistant in the sun. This is why we tan.