EARTH SCIENCE
PALEONTOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When an organism reproduces
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The inside of a nucleus
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When an organism dies off from Earth.
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How your teacher feels on Friday afternoon.
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Detailed explanation-1: -Extinction occurs when species are diminished because of environmental forces such as habitat fragmentation, climate change, natural disaster, overexploitation by humans, and pollution, or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).
Detailed explanation-2: -Extinction is the complete disappearance of a species from Earth. Species go extinct every year, but historically the average rate of extinction has been very slow with a few exceptions.
Detailed explanation-3: -There are two main types of extinction: Mass extinction and background extinction.
Detailed explanation-4: -An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp change in the diversity and abundance of multicellular organisms.
Detailed explanation-5: -End Ordovician (444 million years ago; mya) Late Devonian (360 mya) End Permian (250 mya) End Triassic (200 mya) – many people mistake this as the event that killed off the dinosaurs. End Cretaceous (65 mya) – the event that killed off the dinosaurs. 30-Nov-2022