Question

Activity 9: TMG (Transformations, Mass Extinctions and Geologic Changes) Directions: Earth’s history is marked by a series of transformations, mass extinctions and geologic changes that have taken place over the course of 4.6 billion years. Place the given events on the corresponding time it occurred.​

Answer 1

Answer:

The number of species on the planet, or in any geographical area, is the result of an equilibrium of two evolutionary processes that are continuously ongoing: speciation and extinction. Both are natural “birth” and “death” processes of macroevolution. When speciation rates begin to outstrip extinction rates, the number of species will increase; likewise, the number of species will decrease when extinction rates begin to overtake speciation rates. Throughout Earth’s history, these two processes have fluctuated—sometimes leading to dramatic changes in the number of species on Earth as reflected in the fossil record

Explanation:

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