Fill in the Blanks

1 . The exploded in the sky on the Fourth of July .
2 . exercise will keep your heart and lungs healthy .
3 . The heat surfaced at the Earth's crust creating a natural hot spring that hikers could bathe in .
4 . The fires were intentionally set by an arsonist with .
5 . It's hard to imagine from its plain exterior , but a contains such spectacular crystals inside .
6 . Before planting their crops the farmers the soil so the water and nutrients can move freely to the roots of the plants .
7 . is important to understand when studying history since land formations affected where earlier settlers decided to live .
8 . Cars that are have less wind resistance and will get better gas mileage .
9 . rock can be found near volcanoes .
10 . The plane took an picture of our school from the sky .