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