Answer:
Earth and it's atmosphere are continuously altered. Plate tectonics shift the continent's, raise mountains and move the ocean floor while process not fully understood alter the climate. Such constant change has characterised Earth since its begining some 4.5 billion years ago.
Explanation:
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The material is cooler and denser. As we move from the core to the crust of the earth, the temperature and pressure of the layer keep on decreasing. ... Similarly, the pressure also decreases as we move from core to crust. Consequently, the density of the material increases as they become solidified.
Answer:
Digging of irrigation canals to irrigate their fields allowed for growing better and more crops. food surpluses allowed people to do other work than farm. this meant that they had enough food to survive in extra to trade with.
Explanation:
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Answer: It depends on the season
Explanation:
In summer Northern Hemisphere is hot and Southern Hemisphere is cold In Winter Northern Hemisphere is cold and Southern is hot . Fall and spring are medium tempature on both sides
I'm thinking A. Because uniformitarianism means the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.