The process of extinction involves many factors, such as weather, habitat loss, environmental toxins, disease, and shrinking population dynamics.
These factors can be analyzed to predict extinction risks and rates for endangered species.
What are the main reasons animals become extinct?
Species become endangered for two main reasons: loss of habitat and loss of genetic variation. A loss of habitat can happen naturally. Dinosaurs, for instance, lost their habitat about 65 million years ago.
What are the 4 main causes of extinction?
Overview. There are five major causes of extinction: habitat loss, an introduced species, pollution, population growth, and overconsumption.
Why are animals going extinct so fast?
The current extinction is most likely the result of human activity, especially over the past century. Scientists estimate that 100 to 10,000 species — from microscopic organisms to large plants and animals — go extinct each year. This is 100 to 1,000 times faster than historic extinction rates.
What is the main cause of extinction in plant and animal species?
Deforestation and urbanization combine to create two reasons why plants and animals become extinct. As the human population grows, more and more land has to be cleared and urbanized for living space. This shrinks habitat for animals and plants.