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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<span>Hurricane storm surge is the biggest threat. Hurricanes cause damage in three ways: wind, rain, and storm surge.
</span><span>There are steps you can take to help mitigate some of the damage caused by a hurricane or tropical storm. If your home is equipped with storm shutters, make sure you can quickly put them in place. Clear your yard of debris that could become projectiles in high winds and trim dead or overhanging branches from trees surrounding your home. It's also a good time to make a quick review of your home to make sure the roof sheathing is properly secured, that end gables are securely fastened to the rest of the roof, and that doors and garage doors are properly secured.
For personal safety, identify what storm shelter is available to you and prepare an evacuation plan for your family. Also, make sure you have a hurricane survival kit that includes bottled water, a first aid kit, flashlights, a battery-operated radio, at least three days of non-perishable food items, blankets, clothing, prescription drugs, eyeglasses, personal hygiene supplies and enough cash for at least three days.</span>
It is all about the tilt of the Earth’s axis. Many people believe that the temperature changes because the Earth is closer to the sun in summer and farther from the sun in winter. In fact, the Earth is farthest from the sun in July and is closest to the sun in January!
During the summer, the sun’s rays hit the Earth at a steep angle. The light does not spread out as much, thus increasing the amount of energy hitting any given spot. Also, the long daylight hours allow the Earth plenty of time to reach warm temperatures.
During the winter, the sun’s rays hit the Earth at a shallow angle. These rays are more spread out, which minimizes the amount of energy that hits any given spot. Also, the long nights and short days prevent the Earth from warming up. Thus, we have winter!
<span>Garbage patches are more likely to form in the center of gyres, where there are currents pushing stuff toward the center but none flowing outward.</span>
