Quiz Time!

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Across
  1. 3. should be conserved in such a way so that it is also preserved for ________________.
  2. 7. What is the effect of sustainable development on natural resources?
Down
  1. 1. Recycling 1 tone of paper saves approximately how many trees?
  2. 2. Nearly half of the solid waste produced globally is _____________.
  3. 4. What is the proportion of increase in water usage with the rate of population increases in the last country?
  4. 5. How much money will be saved annually if people world wide switched to energy efficient light bulbs?
  5. 6. How much percent of water is accessible for human use on Earth?