Taking care of Our Earth. World windows : taking care of Our Earth - Boston : Heinle, c2012. - 16 p. : ill. ; 25 cm. - World windows readers ; level 3 . - World windows readers ; level 3. . How can you take care of the Earth? ISBN: 9781133566151 1133566154 Subjects--Topical Terms: Readers.Animals--Effects of pollution--Juvenile literature.Environmental quality--Juvenile literature.Pollution--Environmental aspects--Juvenile literature.Recycling (Waste, etc.)--Juvenile literature.