The natural world

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Across
  1. 2. Energy source derived directly from living matter
  2. 5. The current geological age
  3. 8. The frozen water parts of the Earth's surface
  4. 10. The natural home or environment of an animal, plant, or other organism
Down
  1. 1. The excessive enrichment of an aquatic ecosystem with nutrients
  2. 3. A biological community of interacting organisms and their physical environment
  3. 4. The study of ancient life on earth via fossils
  4. 6. The earthy, pleasant scent that fills the air when rain falls on dry soil
  5. 7. The process of wear by wind, water, or other natural agents
  6. 9. (Of a plant or animal) native and restricted to a certain place or specific natural environment