ecosystems

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Across
  1. 9. the process by which cells convert glucose and oxygen into energy
  2. 12. living
  3. 13. an expert in or student of ecology.
  4. 14. a small arthropod animal that has six legs and generally one or two pairs of wings.
  5. 16. a colorles, odorless reactive gas the chemical element of atomic number 8 and the life-supporting component of the air
  6. 17. a scenic or historically important area of countryside protected by the federal government for the enjoyment of the general public or the preservation of wildlife.
  7. 20. living things, like trees, flowers, and grass, that grow from seeds and use sunlight to make their own food, any nutritious substance that people or animals eat or drink or that plants absorb in order to maintain life and growth.
  8. 22. a living organism that feeds on organic matter
  9. 24. the earth considered as the source of all its living beings and inanimate things.
  10. 26. non living
  11. 27. important substances you get from food that help your body survive and grow.
  12. 28. an animal that feeds on carrion dead plant material
  13. 29. an animal that feeds on other animals
  14. 30. interactions and relationships between living and non living things
Down
  1. 1. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
  2. 2. a hierarchical series of organisms each dependent on the next as a source of food.
  3. 3. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
  4. 4. a colorless transparent odorless liquid that forms the seas lakes rivers and rain and is the basis of the fluids of living organisms.
  5. 5. warm-blooded egg-laying vertebrate distinguished by the possession of feathers wings and a beak and by being able to fly.
  6. 6. a human being, especially a person as distinguished from an animal or (in science fiction) an alien. soil, the loose upper layer of the Earth's surface where plants grow
  7. 7. the natural home or environment of an animal, plant, or other organism
  8. 8. any nutritious substance that people or animals eat or drink or that plants absorb in order to maintain life and growth
  9. 10. a green pigment present in all green plants and in cyanobacteria responsible for the absorption of light to provide energy for photosynthesis.
  10. 11. the capacity to do work or the ability to cause change
  11. 15. objects or entities that lack the characteristics of life meaning they don't grow reproduce or require energy to survive.
  12. 18. an animal that feeds on plants.
  13. 19. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
  14. 21. anything that has all the characteristics of life, such as reproduction, growth, and nutrition
  15. 23. an organism especially a soil bacterium fungus or invertebrate that decomposes organic material.
  16. 25. an animal or person that eats food of both plant and animal origin.