Answer:
1. Cooking our food and just drinking water to stay hydrated. 2.Cleaning ourselves, objects, surroundings, etc. 3.Transportation of goods and of people. The main and most important thing is probably drinking water because all life needs water and we can't go long without it.
Explanation:
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"There are assignees, assignors, and obligors."
Rroughly half to 60% can speak it well enough to hold a basic conversation