The answer of this is -0.8
If Earth was just revolving around the Sun, but was not spinning around it's own axis, than we would've had two big contrasts on the Earth, on the one side we would've had an endless day, and on the other side an endless night. This is due to the fact that one half of the Earth would always be directed towards the Sun, while the other will never be directed towards the Sun.The one part where there would be constant day will be very hot, while the other part with the constant night will be extremely cold.
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:
hope it help to you
8 x 5/2 = 40/2 = 20 units
We find the area of a four sided shape by multiplying the height and the base of the shape, since a right triangle is half a four sided shape, we just divide that by 2.
I think iron sorry if I am wrong
