Our environment

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Across
  1. 1. In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum ?
  2. 6. Which one term in the following includes the others ?air, flora, fauna, environment, water, sunlight, soil
  3. 7. What is the functional unit of the environment comprising of the living and non-living components called ?
Down
  1. 2. What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants ?
  2. 3. Which one of the following is not a terrestial ecosystem ?
  3. 4. Grassland, Aquarium, Desert
  4. 5. A food chain represents a unidirectional flow of X. What is X ?