1. My mother raises some chickens and they lay many..... A. babies B. eggs C. kids D. children 2. ............ is a change in weather that makes the Earth hotter or colder A. Pollution B. Tourism C. climate change D. Wildlife 3. Soon, there may not be any sarus cranes left in Vietnam because of the effects of climate change.......... their habitats A. To B. Over C. To D. Reduce 4. We should........ drink cans and used paper to save the environment. A. Throw away B. Recyle C. Burn D. Reduce 5. ....... is the average height of sea where it meets the land. A. Sea range B. Sea shore C. Sea level D. Seaside