I think that the natural causes of the extinction of animals and plants is a natural disaster.For example: volcanoes, earthquakes, plate movement, magnetic reversal, mudslides, floods, drought, global warming, etc.
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I'm afraid you are not quite right there. Individual events such as single eruptions and mudslides have only local effects. Extinctions imply world-wide changes, usually of climate, but these can follow very large-scale, very long-term volcanic activity.
Earthquakes don't drive species into extinction - their only fatal effects on wildlife are local and generally from either resulting tsunamis or landslides.
tsunami and maybe volcanoes
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Tsunami affect only local populations of wildlife. They don't really do much lasting harm to the natural world, only to humans and their settlements in the path of the breaking wave.
Volcanoes can be implicit in mass-extinctions if the volcanism as a whole is on a sufficiently large scale for a sufficiently long time.
The Deccan [basalt-flood] Trappes that form the ridge along the West coast of India are an example, if one of the factors in the KT Boundary extinction that did for the poor dinosaurs 65Ma.
Plants and animals become extinct because they do not adapt to their environments.
There are several factors responsible for the extinction of plants and animals:
1. Over-exploitation of their population by human or other animals.
2. Breakdown in sexual life cycle
3. Reduction of areas of their natural habitat
4. Inhospitable environmental conditions
5. Breakdown of some epidemic disease, etc.
It's called extinction, and it results from natural selection.it means the species is extinct
Natural selection.
Extinction of a particular animal species occurs when there are no more individuals of that species alive anywhere in the world. The process of extinction is a natural part of evolution.
The factors that generally cause mass extinction are changes in the natural ecosystem of the species. This may make it difficult for the species to reproduce and to stay alive.
Is extinction the word you're looking for ?
The loss of a species is called extinction.
Millions of animals will lose their natural habitats, resulting in the extinction of many species.
People should help protect extinct species because they are for all our Natural Resources
Endangered or Critically Endangered.
save a species from extinction.
Don't feed the bears. If everyone follows this advice, then then bears will seek out their natural foods.
Extinction of mangroove forests which are the natural breeding sites of roseate spoonbill has made the species endangered.