B7 Crossword

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Across
  1. 5. the cutting down of trees in a large area, or the destruction of forests by people
  2. 6. When an organism consumes a toxin faster than it can get rid of it
  3. 8. Happens when nutrients build up in water, can cause an algal bloom
  4. 10. the number and types of plants and animals that exist in a particular area or in the world
Down
  1. 1. Happens in plants, allows sexual reproduction to take place to produce variation in the next generation
  2. 2. Material that was part of a living organism
  3. 3. Meeting the needs of today's people without damaging the environment for future generations
  4. 4. Method of planting seeds that benefits soil over ploughing
  5. 7. all the living things in an area and the way they affect each other and the environment
  6. 9. Where all the resources and energy that are used stay in the system