Answer:earth
Explanation:
Setting up the seasons. The direction of Earth's revolution is in the direction of its rotation. Because the path around the sun is not circular, we are closer to the sun at certain time of the year.
Answer:
Genetic variation.
Explanation:
It is caused by genes inherited from parents to offspring. It is a result of genetic information from parents.
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Answer:
I'm not sure i can understand that passage
The answer is B) Inca. Extensive road network across plains, deserts and mountains reaching all corners of the empire was one of the notable features of the Inca empire like terraced farming, canals, crop rotation and irrigation as agricultural innovations. It allowed smooth military operations, trading, and the use of runners or chasquis.
Answer:
Proper cleanliness of water..
