Pollution /
Sally Morgan.
- Mankato, Minn. : Cherrytree Books, c2011.
- 30 p. : col. ill. ; 28 cm.
- Helping our planet .
Includes index.
Harming the planet -- Dirty air -- Cars everywhere -- Cleaning the air -- Ozone -- Polluted water -- Cleaning up the rivers -- Oil spills -- Digging and dumping -- Farming and pollution -- Cleaning up the planet.