What are three things that humans do can lead to the extinction of an animal species?

1. Habitat destruction: When humans clear forests, drain wetlands, or pave over natural areas, they can destroy the habitats of wild animals. This can make it difficult for the animals to find food, shelter, and water, and can eventually lead to their extinction.

2. Hunting and overfishing: When humans hunt or fish for animals at unsustainable rates, they can reduce the population of those animals to the point of extinction. This is especially true for large, slow-breeding animals like whales, elephants, and tigers.

3. Pollution: Pollution can contaminate the air, water, and soil, making it difficult for animals to survive. Chemicals from pesticides and fertilizers can also seep into the environment and harm wildlife.