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1 Crabs Cause Problems — Basic Story
Some crabs are causing many problems for rivers and streams. People are worried. They are trying to find ways
to get rid of them.
These crabs are said to be a special food in China. Some people think that they were brought from China to
California about ten years ago. Since then there are many more of these crabs.
These crabs are making the sides of rivers and streams weak. This can be very dangerous. If the sides of the
rivers and streams get too weak they can break and cause flooding.
People are trying to find ways to keep the crabs out of certain areas. They are using screens to do this. The
screens are big enough to let fish through but small enough to block the crabs.
Other people are collecting the crabs. They want to learn more about them. They hope to find a way to keep
them from having babies.
2 cause
to make something happen
3 collect
to gather and keep things
4 crabs
water creatures with hard shells and ten legs
5 dangerous
not safe
6 flooding
overflowing with water
7 problems
things that are causing bad things to happen
8 river
a large body of moving water
9 screen
fence with holes to let smaller things go through
10 special
not common or ordinary
11 weak
not strong