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The Alvarez hypothesis posits that the mass extinction of the dinosaurs and many other living things during the Cretaceous–Paleogene extinction event was caused by the impact of a large asteroid on the Earth. Prior to 2013, it was commonly cited as having happened about 65 million years ago, but Renne and colleagues (2013) gave an updated value of 66 million years.[1] Evidence indicates that the asteroid fell in the Yucatán Peninsula, at Chicxulub, Mexico. The hypothesis is named after the father-and-son team of scientists Luis and Walter Alvarez, who first suggested it in 1980. Shortly afterwards, and independently, the same was suggested by Dutch paleontologist Jan Smit
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it was on wiki
The abiotic and biotic factors of an ecosystem both interact with each other on many levels. For example, temperature, which is an abiotic factor in most ecosystems, will determine what type of flora and fauna can live there.
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C. The cell theory has not been accepted by the scientific community.
Explanation:
I majored in Biology
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1.)The universe started at a central point.
2.) Almost all galaxies are moving away from us.
3.) The farther away a galaxy is, the faster it is moving away.
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Effects found at a convergent boundary between continental plates include: intense folding and faulting; a broad folded mountain range; shallow earthquake activity; shortening and thickening of the plates within the collision zone.