Solve these clues to fill the grid.
- The regions of the surface and atmosphere of the Earth where living organisms exist
- 1 Across
- The occurrence of surplus liquid exceeding the limit or capacity
- 5 Across
- A group of people living in a particular local area
- 6 Across
- The wide part of a river where it nears the sea
- 8 Across
- The watery layer of the earth's surface
- 10 Across
- A vast treeless plain in the Arctic regions where the subsoil is permanently frozen
- 11 Across
- Water that is not salty
- 12 Across
- Land where ___ or ___ vegetation grows and is the dominant form of plant life
- 14 Across
- The status of an organism within its environment and community
- 15 Across
- Dry land with very little rain
- 16 Across
- A system formed by the interaction of a community of organisms with their physical environment
- 2 Down
- Layer of air around the Earth
- 3 Down
- Of or relating to or part of trees or shrubs bearing cones and evergreen leaves
- 4 Down
- Large area covered with trees
- 7 Down
- Ground that is ___ frozen
- 9 Down
- Coins collectively (plural)
- 13 Down
