Across
- 2. garbage that isn't recycled ends up in a
- 4. manyfish are dying because of this that factories dump into rivers every day
- 6. some man-made materials are not like this and they can take years to break down
- 7. scientist have been working on this kind of transportation like hybrid cars to cut down on pollution
Down
- 1. due to the lack of rain,we are experiencing a
- 3. if we continue to over-use them , they might run out some examples are oil, coal
- 5. scientist think that polar ice caps are melting at an ever-increasing rate because of