Answer: D
Explanation:
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Because there is a difficulty in quantifying, putting in numbers, the value of community and cooperative organizations. So the conclusion is simple: If you can not quantify you can not measure and if there is difficulty in quantifying, there is the same difficulty in measuring.
Answer:
Mars (diameter 6790 kilometers) is only slightly more than half the size of Earth (diameter 12750 kilometers). Note the difference in color between the two planets. Almost 70% of Earth's surface is covered by liquid water. In contrast, Mars now has no liquid water on its surface and is covered with bare rock and dust.
Explanation:
