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85% of earths history and the earliest era that exists. bacteria mostly survived then and built up oxygen until a mass extinction.The. Era had many extinctions because of large variations in climate is what mesozoicor cenozoic or precambrian which one
Well because there is no proof.
There have been five massive extinctions which the earth has faced beginning with the end of the Cretaceous period, and there have been approximately 11 lesser extinctions in addition to the big five.
Because there are so many, many, many parts in it. 12 in one dozen, 144 in one gross, 6*10^23 in one mole. This is all by definition or concensis, something like: how many players are in a football team.
Statistically none - or zero. When an asteroid hits Earth - we know about it - or if it is large enough - we don't. The last asteroid to "hit" Earth was about 3.3 million years ago and precedes numerous extinctions.
Paleozoic
Paleozoic
85% of earths history and the earliest era that exists. bacteria mostly survived then and built up oxygen until a mass extinction.The. Era had many extinctions because of large variations in climate is what mesozoicor cenozoic or precambrian which one
Variations
Well because there is no proof.
There were mark numbers from 1 to 24 with many variations, also about 8 marks of Seafire. Every mark had many variations so there was a large number of slightly different aircraft.
Because there are so many variations of what is really a simple food.
Too many and too many variations of each.
There are many variations, but a typical large gas-turbine engine spins at about 12,500 rpm.
because of the interdependence of living things The extinction of one species or development of a new one often affect many others because of their interdependence in an ecosystem.
There are 3 variations in parighasana
either two a protaganist (good guy) and an antagonstic (bad guy) or infinity characters because they can have different personallities which are variations.