Answer:
All living organisms respond to stimuli.
All living organisms can reproduce.
1,4,2 those are the answers in order
Hello there.
<span>Protein transporters that move materials against a concentration gradient are active transport proteins.
True</span>
Differences in the density of water can<span> also cause </span>currents<span> to form and move. Density is </span>affected<span> by temperature and </span>salinity. Cold water or water with dissolvedsalts<span> (higher </span>salinity<span>) is denser than warm water or water without dissolved </span><span>salts.</span>