Answer:
C.
Explanation:
Pycnocline is a layer in the oceanic body in which the density of water increases with the depth in the ocean. This change in density happens due to the changes in temperature and salinity of water.
<u>Other four words/phrases are related to the process of water purification. The only word which does not fit in the water purification process is Pychnocline. </u>
So, the correct answer is Option C.
Answer:
A) first and last points made
Explanation:
They have the most influence and strongest points.
Answer:
historians believe metal objects were first used as money as early as 5,000 B.C. Around 700 B.C., the Lydians became the first Western culture to make coins.Using coins with set values made it easier to compare values and trade money for goods and services.
Explanation:
