|
1
|
 |
W-115 Why Does It Rain?
The sun shines on lakes and rivers.
The water becomes warm in the sunlight.
Warm water slowly rises into the air.
This change is called evaporation.
High in the sky, the air is cooler.
The wate...
|
|
E-BOOK
K-BOOK
VOCA
COLC
ORDER
SPEAKING
|