When is reaches the outside of the volcano
Answer: If water is the transport medium of sediment, the grain size sedimentary deposits most closely indicates:
(B) average velocity of the water from the time of erosion until deposition.
Explanation: Here, the average velocity of the water determines the sorting of the grain size.
If the average velocity is high like that of the beach, the grain size will be well sorted.
But if the average velocity is low like that of a stream, it would be poorly sorted.
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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