Solve these clues to fill the grid.
- The part of the earth's surface consisting of humus and disintegrated rock
- 2 Across
- A community of organisms where there are several interrelated ___ chains
- 4 Across
- The ___ of an advancing mass of ___ air
- 6 Across
- The side that is forward or prominent
- 7 Across
- Of or relating to living organisms
- 8 Across
- Layer of air around the Earth
- 11 Across
- Moving air
- 13 Across
- The quantity of water falling to earth at a specific place within a specified period of time
- 14 Across
- The process of becoming a vapor
- 15 Across
- The prevailing psychological state
- 1 Down
- The ___ of an advancing mass of ___ air
- 3 Down
- The process of changing from a gaseous to a liquid or solid state
- 5 Down
- How hot or cold something is
- 9 Down
- The process of giving off or exhaling water vapor through the skin or mucous membranes
- 10 Down
- The organic circulation of ___ from the atmosphere into organisms and back again
- 12 Down
- The power to do work or make things move
- 15 Down