It provides oxygen for 18 people.
Answer: Bosnia and Herzegovina convertible mark
United states, France, Great Britan and, Japan
Umm the boxes should look like this
Answer: Agricultural Hearths. When looking at the spread of new ideas, we start with the place where that idea emerged. We call this a hearth, so an agricultural hearth would be the place where farming was first developed. Over in China, between the Yellow and Yangtze rivers, ancient people developed agriculture on their own.
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