Prehistoric Era, 90,000 BP to 5000 BCE: Human Migration Around the Indian Ocean
How the Ocean Came to Be
The Indian Ocean became an enclosed sea by the action of Continental Drift. This theory of flat coats shaping is also called Plate Tectonics. According to this theory, the landmasses that form the continents moved e reallyplace millions of years of geologic time, as plates, or sections of earths crust separated and pushed against each other. India, Australia, and Antarctica separated from the ancient super-continent called Gondwana and drifted toward their circulating(prenominal) locations. The Indonesian islands separated from the continent of Asia, and Madagascar drifted away from Africa. In the process, mountains were pushed up, wish well the Himalayas, and they are still rising, forming the highest peaks in the world. The Mediterranean and the Red sea formed as the complex plates in what is today the inwardness East shifted and collided. Earthquake zones are still active there today. Though these changes are still happening, continental drift is very slow, and major movements of the continents happened on a geologic timescale far long-dated than human archives.
Changing Climate on Earth
Climate change, in contrast, is on a shorter time scale.
Change in earths warming and cooling patterns has abnormal plants, animals, and human history a great deal. Ice ages and periods of warming have been traced by dint of study of Antarctic ice cores, giving a examine of the past 400,000 years. During much of this period, temperatures were between 4 and 8 degrees ice chest than todays average, but there were several major warming spikes. These changes made a big difference in earths tropical zones, though they may front small to us. Such changes affected rainfall, the extent of deserts and grasslands. They affected sea levels around the world, which fell as more water was locked up in polar ice caps and glaciers. This action open(a) land that had been under water. Sea...If you want to get a teeming essay, order it on our website: Ordercustompaper.com
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