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Extinction is caused by a change in a species environment. The members of a species may not have adaptions that allow them to survive and reproduce in the changed environments.
Extiction may also be caused by catastrophic upheavils that perish the entire living matter of that place and if an organism is localized to that region it may get ileminated.
What else can I help you with?
The causes of some of the earliest extinctions such as the Permian extinction are because humans started changing the earth?
A+ False
What is the animal group with the most extinctions?
invertabates are the animals with the most extinctions
What are some of the causes of background and mass extinctions?
Background extinctions are typically caused by natural events such as climate change, volcanic eruptions, or asteroid impacts. Mass extinctions are often attributed to catastrophic events like major asteroid impacts, volcanic eruptions, or significant climate change, which cause widespread disruption to ecosystems and species. Human activities, such as habitat destruction, pollution, and overexploitation of resources, can also contribute to both background and mass extinctions.
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.
Do scientists believe that extinctions are uncommon?
No, they are fundamental to the process of evolution. Mass extinctions are less common.
What is a probable cause of two mass extictions?
For all mass extinctions (except the Cretaceous/Paleogene extinction) two probable causes are volcanic eruptions and ocean anoxia.
Do extinctions happen frequently?
No
Have extinctions occurred in the past?
Yes, extinctions have happened throughout history, they are happening today and will continue to happen in the future.
Why do you think most extinction's occur as background extinctions?
Most extinctions occur as background extinctions because they are longer time periods unlike the shorter mass extinctions which there were only two in the Paleozoic era, the Ordovician mass extinction, and the Permian/Triassic extinction in which 95% of all marine animals became extinct
What can change the food chain?
Extinctions.
What is the major cause of extinctions?
Us.
Characteristics of past mass extinctions?
Past mass extinctions are characterized by significant and rapid loss of biodiversity across various taxa, often resulting in the extinction of a large percentage of species within a relatively short geological timeframe. Common causes include dramatic environmental changes, such as volcanic eruptions, climate shifts, asteroid impacts, and ocean acidification. These events often disrupt ecosystems and food chains, leading to long-lasting impacts on the planet's biological diversity. Notably, the five major mass extinctions, including the Permian-Triassic and Cretaceous-Paleogene extinctions, have reshaped the course of evolution and the structure of life on Earth.
