Solve these clues to fill the grid.
- The planet we live on
- 2 Across
- Condition in which the earth's surface is worn away by the action of water and wind
- 3 Across
- The offspring at one birth of a multiparous mammal
- 6 Across
- Of or relating to ___
- 7 Across
- An efficient incentive
- 8 Across
- Huge body of salt water (plural)
- 10 Across
- Tiny grains found on beaches
- 12 Across
- United States baseball player
- 13 Across
- The layer of soil between the topsoil and bedrock
- 14 Across
- Hard outer layer of the Earth or of bread
- 1 Down
- A fertilizer that is derived from animal or vegetable matter
- 4 Down
- Mountain that erupts with lava (plural)
- 5 Down
- The act of extracting ores or coal etc from the earth
- 7 Down
- United States general who commanded United States forces in Europe from 1945 to 1949 and who
- 9 Down
- The part of the earth's surface consisting of humus and disintegrated rock
- 11 Down
- Mud or clay or small rocks deposited by a river or lake
- 15 Down