Answer:
b.
Explanation:
Religious structures drew people into the city, encouraging growth because people wanted to live near temples, monuments, and religious sites. ... Religious structures encouraged travel to early cities, but ultimately the land needed for agriculture prevented widespread growth, keeping early cities quite small.
Answer:
Explanation: The only real solution is to have a large automated labor force moving materials from Venus to Mars to make Mars large enough to kick start it's own magnetosphere and natural life cycle processes. The solar winds could potentially be harnessed to travel back and forth while stripping materials from Venus to Mars.
Subarctic climate is found at 60 degree north latitude.
This is because a latitude of 60°N corresponds to a subarctic climate according to the Koppen Classification and the vegetation consists mostly of conifers.
This region is described by cool summers, low precipitation and moderate humidity or long cold winters and short, warm to cool summers.
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The mantle is actually a liquid. The intense heat of the core of the Earth causes the mantle to move in convection currents.
It is using crops and plants origins to create fuel for vehicles.
