UNIVERSE
METEORITES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the dinosaurs extinction
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large icy mountains in cold regions
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craters
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None of the above
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Detailed explanation-1: -Evidence For the Asteroid Impact Theory High levels of iridium, a mineral which is rare on Earth but common in asteroids. Iridium is much more common in rocks from the Cretaceous Period than it is in rocks from any other time. A lot of ejecta, small pieces of rock thrown up by big collisions.
Detailed explanation-2: -There are still many craters on Earth which are visible from space. Some craters in areas of low rainfall (i.e. where little erosion occurs) are relatively intact, such as this crater-Meteor Crater in Arizona, U.S.A. Meteor Crater in the Colorado Plateau, 73 km east of Flagstaff, Arizona.
Detailed explanation-3: -Earth was similarly hammered but most of the telltale craters have been erased by volcanic processes, plate tectonics, and erosion by water, wind, or ice. However, traces of some craters still remain.