Problemas
How many mass extinctions has the been on Earth.according to the geologic record? 3 is 7 10
Roztwór
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professionell · Tutor durante 6 años
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(193 Votos)
Respuesta
The number of mass extinctions that have occurred on Earth according to the geological record is 5.
Explicación
## Step 1The question is asking for the number of mass extinctions that have occurred on Earth according to the geological record. Mass extinctions are events in which a significant percentage of all life forms on Earth become extinct in a relatively short period of time.## Step 2The geological record shows that there have been five major mass extinctions in Earth's history. These are:1. Theician-Silurian extinction, which occurred approximately 443 million years ago.2. The Late Devonian extinction, which occurred approximately 359 million years ago.3. The Permian-Triassic extinction, also known as the "Great Dying", which occurred approximately 252 million years ago.4. The Triassic-Jurassic extinction, which occurred approximately 201 million years ago.5. The Cretaceous-Paleogene extinction, which occurred approximately 66 million years ago.## Step 3These events are significant because they have shaped the course of evolution and the development of life on Earth.