1) We use wood from trees to build houses and to make furniture. We can also use wood to build boats. a) Plants are useful for construction and transportation. b) Plants provide food for human. c) Plants reduce soil erosion. 2) Horses and oxen help farmers to pull ploughs. Elephants help to carry heavy loads. a) Animals provide human beings with food. b) Animals help humans with their work. 3) We get rice, potatoes and wheat from plants. fruit and vegetables also come from plants. a) Plants are useful for construction and transportation. b) Plants provide food for human. c) Plants reduce soil erosion. 4) The roots of plants and trees hold the soil together. This prevents rain from washing away the soil. a) Plants are useful for construction and transportation. b) Plants provide food for human. c) Plants reduce soil erosion. 5) Cows and goats give us meat and milk. Ducks and chickens give us meat and eggs. a) Animals provide human beings with food. b) Animals help humans with their work.

Choose the main idea for each statement.

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