Protecting the Few How we live our lives affects the environment. The environment is all the things around you. All across Earth, humans are 31 the environment in small and large ways. We cut down trees to build houses. We plow fields to 32 crops. We pour waste into rivers, lakes and oceans. We use larger nets and bigger boats to catch 33 numbers of fish. Activities like these affect plants and animals. They 34 affect things like the soil and water. Sometimes our actions make the number of a 35 plant or animal get larger. For example, if you planted roses in your yard, there would be more roses in your area. Our activities can also 36 to a smaller number of plants and animals. If a park were turned into an apartment building, what would happen to the plants and animals there Well, they would 37 die or move to other 38 . There would be fewer plants and animals. Pollution and other activities sometimes cause the number of a species (物种) to become so 39 that it cannot survive. A species that is in 40 of dying out is called an endangered (濒危的)species. A. changing B. grow C. lead D. either E. huge F. places G. certain H. also I. increase J. small K. survival L. danger