EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All organisms have identical genetic codes and therefore produce similar features.
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Organisms are related by a common ancestor that evolved over a very long period of time.
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Organisms adapted the same way to their environments in order to produce beneficial traits.
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Following mass extinctions, new organisms followed the genetic path of the previous extinct organisms
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Detailed explanation-1: -Paleontologists have recovered and studied the fossil remains of many thousands of organisms that lived in the past. This fossil record shows that many kinds of extinct organisms were very different in form from any now living.
Detailed explanation-2: -Fossils help scientists understand what life was like millions of years ago. Some fossils provide evidence of living things that have gone extinct, which means they no longer found alive anywhere on earth today.
Detailed explanation-3: -Many organisms that lived in the past are now extinct. Species occupying the same habitat have identical environmental needs.
Detailed explanation-4: -Mass extinctions were first identified by the obvious traces they left in the fossil record. In the strata corresponding to these time periods, the lower, older rock layer contains a great diversity of fossil life forms, while the younger layer immediately above is depauperate in comparison.