Crosswords Solver

Answer: mesosphere
Answer	Crossword Clue
mesosphere	a zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle
mesosphere	The region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.

Answer: mesosphere