1  2  3  4

1  _  _  _  _

2  _  _  _  _

3  _  _  _  _

4  _  _  _  _


ACROSS
1)  work doggedly or persistently
2)  rock that in its molten form (as magma) issues from volcanos; ____ is what magma is called when it reaches the surface
3)  an asian river between china and russia; flows into the sea of okhotsk
4)  suggestive of sexual impropriety


DOWN
1)  the scum formed by oxidation at the surface of molten metals
2)  a tibetan or mongolian priest of ____ism
3)  the female reproductive cell; the female gamete
4)  a city in northwest indiana on lake michigan; steel production

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lava
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