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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About 19% was from nuclear energy, and about 17% was from renewable energy sources.
Volcanoes can form underwater thats how Hawaii was made
The greenhouse gases<span> absorb some of this energy and radiate much of it back towards the surface whilst the rest is radiated out to space. This plays an </span>important<span>role in keeping the </span>Earth's<span> surface warm and able to sustain </span>life<span>.</span>
Answer:
195 countries
Explanation:
There are 195 countries in the world today. This total comprises 193 countries that are member states of the United Nations and 2 countries that are non-member observer states: the Holy See and the State of Palestine.