Researchers say that before the dinosaurs, saber-like teeth predators lived on Earth and fought and bit each other. These are known as gorgonopsians . It was also the dominant species on Earth during the Permian period, about 299 million to...
This immense mountain range began to form between 40 and 50 million years ago, when two large landmasses, India and Eurasia, driven by plate movement, collided. Because both these continental landmasses have about the same rock density, one plate could...
Look at the two pictures given to make this clear. The first is when someone throws a stone. The velocity of the stone is shown as two elements, vertical and horizontal. Since there is no force in the opposite direction...
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