The correct answers are:
2. Fresh water is essential to all life on earth.
and
4. Most of earth's water is stored in the oceans
Answer:
over 4.5billion years ago is the answer
Explanation:
<span>When
valley inversion occurs especially on farming, settlement and industry, it will
cause air to become stiller and murky due to the dust particles suspended
within the layer and pollutants that are heavy enough to move. It will cause health
problems such as asthma, heart attack. Also, the people living in that are may
not see what is in front of them due to air becoming thicker.</span>
