Protecting Earth ses Natalie Hyde 1 Crabtree Publishing Company www crabtreebooks com
to a Contents Protecting our Earth s er to a Quick changes Slow changes 10 A Doing harm Human hands Problem Solvers 12 14 O Making it better 16 Small scale 18 are It Washed away activity 20 E Your help 22 Learning more 23 at Words to know and Index 24 AM
Protecting our Earth Earth's surface is always changing Some changes are good Floods bring new soil to the land along rivers The minerals in the soil help improve farmland Volcanoes can also create new farmland full of minerals Volcanoes in the ocean can create new islands These tomato plants are growing in rich volcanic soil in
