The units are based on history. The first three eons of Earth's history were long because in all three eons over 3.5 billion years, there is little history happening. Most of our known history is in the fourth eon, which takes place over a short period of 500 million years.
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I would say that this is false and while the groundwater table could be right at the level of stream valleys and lakes, on hills provided they are underlain by permeable sediments or rocks, the groundwater table will be much higher than in the valleys as it usually reflects the topography more or less.
B.farming that's really all they do there is farm
Answer:
People spend according to their income.
Explanation:
People fulfill their needs and desire according to their income. People who has high income spend a lot on their needs and luxurious items while on the other hand, the people who are poor and has low income they are able to fulfill their needs only not their wants or desire. So we can say that people spend on their needs and desires according to their income.
