Fill in the blanks:
Options:
12 percent poison Humans
effects trees  
1.   ________  are causing threat to planet earth.
2. Nobody can escape the  _______  of pollution.
3. Save the  _____  to save ourselves.
4.  __________  of the world population lives on mountains.
5. Polluted fish causes food  _______  .
Match the following:
Stop polluting land _______
Stop polluting water _______
Stop polluting air _______