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>
1) It's a Carbohydrate..
'Cause we know, when complex carbs digests, it breaks down into smaller particles and lactose is one of them
C. The shape of a protein allows it to perform several different jobs.
The answer is B. For example ex-boyfriend or ex-wife
Edit.
Answer - Depending on the waves they must measure both at the same station in order to calculate and have knowledge of the interior of the earth.
Reasoning - S waves are sheer waves where as P waves are compressional which leads to both factors of understanding the strength and changes going on in the earth.