Ecosystems 4

Why are ecosystems important? / ¿Por qué son importantes los ecosistemas?. Healthy ecosystems are important because. They can clean the water. They can clean the aire. They keep the climate stable. They provide living things with food. They keep the soil healthy.

Unir: Tropical rainforests clean the water only cover about 6% of the Earth but they´re very important. Rainforests clean the water and air because they filter carbon dioxide and pollutants from the atmosphere. A lot of medicines come from rainforests plants. More than 50% of the land animals on Earth live in rainforests. Many foods, like bananas and pineapples, grow in rainforests.

Unir: rainforest. mangoes. apples. rubber. plastic. coffee beans. wheat.

Unir: Forest ecosystems provide trees. People can build houses and make paper with wood from trees. Pond ecosystems provide a habitat for plants and animals that live in water. Grassland soil has got many nutrients. Farmers use grasslands for agriculture and livestock farming. They grow crops, like cereals or corn. Animals, like cows or sheep, eat the grass.