How do people affect animals?

All around the world, every day, and more people are being born. All these people need somewhere to live and work, and they need food. People take up space. They need space for their farms, their factories, their houses, and their roads. They cut down forests to make room for crops, houses, and roads. Whenever this happens, animal habitats and homes are destroyed. Habitats are also destroyed when people pollute rivers, lakes, and forests with harmful chemicals or other waste.

Tropical rain forests are home to many kinds of animals and plants. But large areas of tropical rain forests are being destroyed each year as people gather lumber, minerals, and other materials. Scientists and other people worry that if much more of the rain forests are destroyed, thousands of species of plants and animals will become extinct.

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