Changes to Earth's Land

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Across
  1. 2. the preserved remains of a plant or animal that lived long ago
  2. 3. the decayed remains of plants and animals
  3. 4. a large mass of deposited sediment at the mouth of a river
  4. 10. a scientist who studies fossils and organisms that lived long ago
Down
  1. 1. the uppermost layer of soil
  2. 4. the dropping of sediment by wind, water, ice, and gravity
  3. 5. the layer of soil just below the topsoil
  4. 6. the movement of weathered rock material from one place to another
  5. 7. the slow breaking apart or wearing away of rock into smaller pieces
  6. 8. a large mass of slow-moving ice that flows down a slope
  7. 9. unweathered rock that lies below the lowest layer of soil