What is the difference between a “normal” and a mass extinction?
✔️ Extinction is a part of life, and animals and plants disappear all the time.
✔️ When a species disappears, scientists say that a species goes extinct.
✔️ From an evolutionary perspective, the role of species that become extinct in the ecosystem is usually filled by new species, or other existing ones.
❗️ Earth's 'normal' extinction rate is often thought to be somewhere between 0.1 and 1 species per 10,000 species per 100 years. This is known as the background rate of extinction.
✔️ However, during the history of life on Earth, there have been periods of mass extinction.
❗️ A mass extinction event is when species vanish much faster than they are replaced. This is usually defined as about 75% of the world's species being lost in a short period of geological time - less than 2.8 million years.
ℹ️ About 98% of all the organisms that have ever existed on our planet are now extinct.
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✔️ Extinction is a part of life, and animals and plants disappear all the time.
✔️ When a species disappears, scientists say that a species goes extinct.
✔️ From an evolutionary perspective, the role of species that become extinct in the ecosystem is usually filled by new species, or other existing ones.
❗️ Earth's 'normal' extinction rate is often thought to be somewhere between 0.1 and 1 species per 10,000 species per 100 years. This is known as the background rate of extinction.
✔️ However, during the history of life on Earth, there have been periods of mass extinction.
❗️ A mass extinction event is when species vanish much faster than they are replaced. This is usually defined as about 75% of the world's species being lost in a short period of geological time - less than 2.8 million years.
ℹ️ About 98% of all the organisms that have ever existed on our planet are now extinct.
Subscribe- t.me/askmenow