Answer:
Glaciers and mountains change over time.
Explanation:
A glacier can melt and a mountain and get bigger.
So we keep on unserstanding social science if it became dead we would habe issues
D. London did not know the source of <span>cholera, and Zimbabwe lacks the resources to treat water. Hope this helps</span>
The prosperity affects how much people spend as consumers. ... An economic theory that links prosperity to consumer demand for goods and services, and that makes consumer behavior centrsl to economic decision making.