How did the development of agriculture in Egypt lead to the development of social hierarchy?

Explanation:

The river's predictability and fertile soil allowed the Egyptians to build an empire on the basis of great agricultural wealth. Their farming practices allowed them to grow staple food crops, especially grains such as wheat and barley, and industrial crops, such as flax and papyrus.

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.