Where is untreated
water stored?

Untreated water is commonly found in Ponds, tanks, dams and reservoirs.

Explanation:

Untreated water may contain any number of contaminants, such as: bacteria, viruses, parasites, heavy metals, pesticides, fertilizers, and human and animal waste. These contaminants are rarely visible to the naked eye and may cause a variety of ailments, including: diarrhea, stomach cramps, vomiting and even pneumonia.

You'll need a safe container in which to store it. The general guideline is to use food-grade plastic bottles. You can also use glass bottles so long as they haven't stored non-food items. Stainless steel is another option, but you won't be able to treat your stored water with chlorine, as it corrodes steel.

Water can be stored in the atmosphere, on the surface of the Earth, or underground. These water storage areas are most commonly known as reservoirs. Natural reservoirs include oceans, glaciers and other bodies of ice, groundwater, lakes, soil moisture, wetlands, living organisms, the atmosphere, and rivers.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.