<span>The most approprate answer is a. water. Although over 70% of the earth's surface is water, only a small percentage is fresh water that is suitable for domestic purposes. The high rate of pollution and the over use of groundwater resources can use water faster than it can be replenished. Some rivers and lakes can become so polluted that they cannot be used for domestic or even agricultural purposes. </span>
Answer:
Here is a list of items that are not included in the GDP: Sales of goods that were produced outside our domestic borders. Sales of used goods. Illegal sales of goods and services (which we call the black market)
Think of the mantle like a peanut butter sandwich<span>. You have the two pieces of bread and the </span>peanut butter<span> between them. In the </span>mantle<span>, we have two layers of solid rock with heated flowing rock between them. Next is the outer core. •</span>ω•