Comparable sorts of plants and animals have been discovered in rocks of a similar age on the beaches of separate continents, implying that the continents were formerly linked. Fossils of Mesosaurus, a freshwater reptile, have been discovered in both Brazil and western Africa.
- Plate tectonics is the hypothesis that the land masses on Earth are constantly moving. Alfred Wegener proposed the concept of continental drift, or the movement of Earth's land masses.
- Wegener proposed that the continents shifted toward and away from each other due to the Earth's rotation. Plates are constantly moving and reacting in a process known as plate tectonics.
- Mountains rise where plates press together, or converge, whereas continents fracture and seas form where plates pull apart, or diverge. The continents are embedded in the plates and drift passively with them over millions of years, resulting in profound changes in Earth's geography.
Thus this is the meaning of Plate tectonic.
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