question The Earth needs us. Why do people always pollute it? It was cleaner and greener with more forests and natural sources before, but today, people damage and pollute everywhere. They pour their wastes into rivers, harm animals, throw their rubbish on the ground, etc. For a clean environment, they can recycle many things like papers, jars or plastics. They can reduce their water and energy usage. They can prefer walking for short distances to stop air pollution. They can unplug electrical devices at home to save energy. Hurry up and save our planet! Which of the following questions.( DOES NOT have an answer in the text above? ) = A) How can people save energy? = B) What can people do to prevent air pollution? = C) What materials can people recyle? =D) What did people do to protect the Earth?​