Omaha and Sacramento is the answer
Tropical climates and rainforests are found near the equator
Answer:
An analysis of 5,000-year-old genetic material from preserved human remains found in Sweden suggests that people moving from southern to northern Europe spread agriculture across that continent long ago.
In addition to agricultural know-how, the intrepid farmers brought their genes: They interbred with hunter-gatherer communities to create modern humans living in Europe today.
"Genetic variation of today's Europeans was strongly affected by immigrant Stone Age farmers, though a number of hunter-gatherer genes remain," study researcher Anders Götherström, of Uppsala University in Sweden, said in a statement.
The results of this study, to be published in the April 27 issue of the journal Science, match up well with previous archeological evidence of farming in Europe.
Explanation:
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Coalescence
Coalescing means the pulling together of separate masses to become one bigger mass.
Explanation:
As water vapor rises into the upper cooler atmosphere, it cools and condenses into moisture droplets. These tiny droplets collide with each other, due to gravity, vertical motions and wind, to form larger droplets. This is even enhanced if there are seed particles in the air that allows the formation of larger droplets. When the droplets get large enough for gravity to act on them, they fall as precipitation.
If there are strong updrafts, the cloud could carry even larger droplets before precipitation which is what happens in the case of thunderstorms.
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Substinence farming is farming food that is just enough to live off of. You don't sell substinence crops.
Commercial farming is growing food to sustain you, and having enough left over to sell.
In both, you grow food and you keep some (or all) for yourself.
