Protecting the few
How we live our lives affects the environment. The environment is all the things around you. All across earth, humans are ____1____the environment in small and large ways. We cut done trees to build houses. We plow fields to ____2____ crops. We pour waste into rivers, lakes and oceans. We use larger nets and bigger boats to catch ___3___numbers of fish. Activities like these affect plants and animal. They ___4___ affect things like the soil and water.
Sometimes our actions make the number of a ____5___ 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 ____6___ 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 ____7____ die or move to other ___8____. There would be fewer plants and animals.Pollution and other activities sometimes cause the number of a species(物种) to become so ___9___ that it cannot survive. A species that is in ____10___ of dying out is called an endangered(濒危的) species.

A.changing
E.huge
I.increase
B.grow
F.places
J.small
C.lead
G.certain
K.survival
D.either
H.also
L.danger