Habitat loss is the leading cause of extinction for many animals. As human populations grow and develop more land, animals lose their natural homes and sources of food. For example, the destruction of rainforests has caused many species of monkeys, birds, and other animals to become extinct.
2. Hunting
Hunting is another major cause of extinction. Many animals are hunted for their meat, fur, or other body parts. For example, the hunting of elephants for their ivory has decimated their populations in many African countries.
3. Pollution
Pollution can also cause animals to become extinct. Chemicals and toxins from factories, vehicles, and other sources can pollute air, water, and soil, making it difficult for animals to survive. For example, the pollution of rivers and oceans has killed many fish and other aquatic animals.
4. Climate change
Climate change is also a major threat to many animals. As the climate changes, animals may lose their natural habitats or find it difficult to find food. For example, the rising temperatures in the Arctic are causing polar bears to lose their sea ice habitat, which makes it difficult for them to hunt for seals.
5. Disease
Disease can also cause animals to become extinct. Some diseases can spread quickly through animal populations, killing many individuals in a short amount of time. For example, the bubonic plague killed millions of people in Europe during the Middle Ages, and it also caused the extinction of many wild animals.
6. Invasive species
Invasive species are non-native species that have been introduced to a new area and have become a threat to native species. Invasive species can compete with native species for food and habitat, and they can also spread diseases. For example, the introduction of the cane toad to Australia has caused the extinction of many native Australian animals.
7. Overpopulation
The rapid expansion of human populations creates an excessive demand on the planet's resources. This can significantly degrade habitats, diminishing space and access to food, shelter and other life necessities for wildlife, leading to their possible extinction.
8. Genetic diversity
Loss of genetic diversity compromises resilience in wildlife populations, making them vulnerable to diseases and other environmental challenges.
9. Bycatch
Sometimes animals are killed unintentionally in fishing nets or traps set to catch other species. This is known as bycatch and many marine animals, including dolphins and whales, are affected.
10. Natural disasters
Natural phenomenon like volcanic eruptions, floods and earthquakes can cause a loss of habitats and destruction of wildlife numbers.