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 (瀕危的)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
