endanger ，observe，search for，recover ，threat，make out，intend，remove，reduce，binoculars

（1）This discovery was the result of years' careful

observation

observation

，thought and study.
（2）Since we were so far away，we could only

make out

make out

a giant figure walking elegantly on the plain.
（3）Joint efforts are needed to

reduce

reduce

the risk of animals becoming endangered.
（4）More nature reserves should be set up for the

endangered

endangered

animals.
（5）A recent research shows that bamboo forest

recovers

recovers

more quickly from land to forest than other forests.
（6）If you happen to find a nest of honey bees，call a local beekeeper for help.Not only will they

remove

remove

the bees but can also save an endangered species，since honey bees are disappearing rapidly.
（7）Water pollution poses（造成）a

threat

threat

to the continued existence of some fishes.
（8）Since China's Northeast Tiger and leopard （豹）populations are distributed（分布）in Jilin and Heilongjiang provinces，the two provinces

intend

intend

to build a National Northeast Tiger and Leopard Park.
（9）Scientists spend much time

searching for

searching for

rare species before they really disappear.
（10）With the help of the

binoculars

binoculars

，they saw a bird that they had never seen before.