natural resources

3. of or found in fresh water; not of the sea.
6. a whole formed by combining several (typically disparate) elements.
8. refers to total fellings and not only to timber removed for own consumption and use
9. solid rock underlying loose deposits such as soil or alluvium.
11. a rock or boulder that differs from the surrounding rock
13. materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain.

1. a result of drought, deforestation, or inappropriate agriculture.
2. a natural substance that is not replenished with the speed at which it is consumed
4. resources that continue to exist despite being consumed or can replenish themselves over a period of time even as they are used.
5. a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted
6. the presence in or introduction into the air of a substance which has harmful or poisonous effects.
7. to move awkwardly or ungracefully
10. a substance that pollutes something, especially water or the atmosphere.
12. situations in which building occupants experience acute health and comfort effects