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The five mass extinctions that occurred in Earth's history took place during the Ordovician period (about 445 million years ago), the Devonian period (about 375 million years ago), the Permian period (about 251 million years ago), the Triassic period (about 200 million years ago), and the Cretaceous period (about 66 million years ago).
What else can I help you with?
Past mass extinctions most likely occurred as a result what?
Sudden changes in environmental conditions.
How many mass extinctions have occurred in the past 4 billion years on earth?
There have been five mass extinctions in the past 4 billion years on Earth. These events resulted in the widespread loss of species and fundamentally reshaped the evolution of life on our planet.
Why mass extinctions occur and why they often mark divisions of geologic times?
Mass extinctions occur when extreme temperatures happen.https://science.howstuffworks.com/life/evolution/extinction3.htm
When geologists refer to the big five' what are the referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
Mass extinctions are usually followed by what?
Mass extinctions are usually followed by a period of rapid diversification as surviving species adapt to new environmental conditions and fill ecological niches left vacant by extinct species. This diversification can lead to the emergence of new species and ecosystems over time.
Past mass extinctions most likely occurred as a result what?
Sudden changes in environmental conditions.
The fossil record indicates that Earth has experienced?
5 mass extinctions
Is the Devonian time before or after the mass extinction?
Which mass extinction? There have been five such events. The first one, the Ordovician-Silurian extinction event occurred before the Devonian. The Late Devonian event occurred during the Devonian. All other mass extinctions occurred after the Devonian.
How many mass extinctions have occurred in the past 4 billion years on earth?
There have been five mass extinctions in the past 4 billion years on Earth. These events resulted in the widespread loss of species and fundamentally reshaped the evolution of life on our planet.
Extinctions only occurred in the past?
false :)
What was the outcomes of each of the mass extinctions?
The outcomes of each of the mass extinctions is that animal and/or bacteria die.
Have extinctions occurred in the past?
Yes, extinctions have happened throughout history, they are happening today and will continue to happen in the future.
When did organisms suffer the largest mass extinction known?
The most devastating mass extinction occurred in the Late Permian (~250 million years ago).
Do scientists believe that extinctions are uncommon?
No, they are fundamental to the process of evolution. Mass extinctions are less common.
Would it be true to say that extinctions only occurred in the past?
false
How many mass extinctions have occurred in the 500 million years?
In the last 500 million years, there have been five major mass extinctions, often referred to as the "Big Five." These include the Late Ordovician, Late Devonian, Permian-Triassic, Late Triassic, and Cretaceous-Paleogene extinctions. Each event resulted in the significant loss of biodiversity and had profound impacts on Earth's ecosystems. Additionally, some scientists suggest that we may be in the midst of a sixth mass extinction driven by human activities.
What has happened during mass extinctions?
Bad things
