It depends on what you're asking. If angle a and b are both on a straight line, b would equal 169 degrees because the total has to add up to 180 degrees, but if they are on a right angle, b would equal 79 because it has to add up to 90 degrees.
I believe it's used in reference to a prism
Impacts of the natural environment on the ancient river valley civilization are given below.
<h3>
What is river valley civilization?</h3>
- A river valley civilization is an agricultural nation or civilization that is located alongside a river and draws its subsistence from it.
- A "civilization" is defined as a society having substantial permanent settlements, social stratification, labor specialization, centralized organization, and written or other formal forms of communication.
- A river provides residents with a dependable source of water for drinking and cultivation.
<h3>Impacts of the natural environment on the ancient river valley civilization:</h3>
- Rivers were appealing to the ancient civilizations because they supplied a consistent source of drinking water and made the land conducive for crop cultivation.
- Furthermore, commodities and people could be easily transported, and the inhabitants of these civilizations could fish and hunt the animals that came to drink water.
- The Indus Valley was fruitful, flooding was regular and predictable, and there was plenty of land in general.
- This resulted in the creation of peaceful people who were able to establish spectacular cities with enormous structures and sewage systems without having to battle for resources.
Therefore, the impacts of the natural environment on the ancient river valley civilization are shown.
Know more about river valley civilization here:
brainly.com/question/14287102
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Answer:
movement
Explanation:
movement is important because with movement we learn and get new ideas from around the world
