Question

One estimate shows that the number of people without access to safe drinking water is about one billion. How much water is required if each person who does not have access to safe drinking water is given 100 L of safe drinking water? Give your answer in scientific notation. NOTE: use shift F6 to indicate an exponent

Answer 1

Answer:

10^11

Step-by-step explanation:

1 billion is 10^9, and each person needs 10^2, so multiply them to get the answer. 10^9x10^2=10^11

Answer 2

One estimate shows that the number of people without access to safe drinking water is about one billion. How much water is required if each person who does not have access to safe drinking water is given 100 L of safe drinking water.

• A safe source of drinking water at home is unavailable to 2 billion people. A basic supply of drinking water is available to 1.2 billion of those individuals.
• Freshwater makes up only around 3% of the water on Earth. Only 1.2% of that can be used for drinking; the rest is trapped beneath the earth's surface in permafrost, glaciers, and ice caps. Rivers and streams provide the majority of our drinking water.
• Despite the fact that 80% of the population in Nepal has access to drinking water, the Department of Water Supply and Sewerage claims that the water is unsafe. In rural locations, those who belong to underprivileged and excluded groups have little to no access.
• To gather and store rainwater for drinking or replenishing underground aquifers, install rainwater harvesting devices. To draw groundwater from subsurface aquifers, construct wells. To make drinking water safe, give people access to home water-treatment systems using filters, solar disinfection, or flocculants.
• Only 0.006% of the total amount of water is suitable for human consumption. Although there is a lot of water on the earth, just a small portion (about 0.3 percent) of it can even be used by people. The remaining 99.7 percent is found in the oceans, soils, icecaps, and air.

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