Answer:
Toledo, Ohio and Toledo, Spain
Explanation:
Toledo, Ohio and Toledo, Spain were the first official pair of sister cities.
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Answer:
The domestication of animals helped contribute to the development of permanent settlements because some animals could help locate were there is food.
The animals need food in order to survive and so do humans, so wherever the animals went to eat they saw that they could eat the similar things.
Explanation:
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It's a hill.
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Answer:
Human air pollution is caused by things such as factories, power plants, cars, airplanes, chemicals, fumes from spray cans, and methane gas from landfills. One of the ways that humans cause the most air pollution is by burning fossil fuels.
Industrialization, discharge of domestic waste, radioactive waste, population growth, excessive use of pesticides, fertilizers and leakage from water tanks are major sources of water pollution
Explanation:
