Term
| When harmful materials get into the water, air, or land, _____ occurs. |
|
Definition
|
|
Term
| We use our resources wisely when we _________. |
|
Definition
|
|
Term
| Over a long period of time, hardened tree sap may become __________ |
|
Definition
|
|
Term
| Water that is held in soil and rocks underneath the ground is called ______ |
|
Definition
|
|
Term
| Water, air, and soil are all ________ that we need to live |
|
Definition
|
|
Term
| A _________ is the remains of a plant or animal that lived long ago. |
|
Definition
|
|
Term
| All rocks are made from _______. |
|
Definition
|
|
Term
| When water vapor cools, it ______________ into water droplets. |
|
Definition
|
|
Term
| The ____________ keeps lakes, rivers, and other water sources from drying up. |
|
Definition
|
|
Term
|
Definition
|
|
