A. INVISIBLE B. UNMOVABLE C. UNSPEAKABLE D. INSENSIBLEV.READ THE F...

30. A. invisible B. unmovable C. unspeakable D. insensibleV.Read the following passage and choose the best answers.In biology and ecology the environment is all of the natural materials and living things on the Earth. Thisis also called the natural environment. Some people call themselves environmentalists. These people think thatharmony with the environment is important. They think we must protect the environment. The important things in the environment that we value are called natural resources. For example fish, sunlight, and forests. These are renewable natural resources because they grow naturally when we use them. Non-renewable natural resources are important things in the environment that do not come back naturally. For example coal and natural gas.