| A | B |
|---|
| biocide | chemcial to kill insects and weeds |
| conservation | to protect natural resources |
| contour plowing | soil conservation method |
| erosion | wearing away of soil by wind and water |
| extinct species | species tha has disappeared entirely |
| herbicide | slow down or destroy unwanted plant growth |
| nonbiodegradable | cannot be broken down naturally |
| Pesticide | chemcial to destroy or slow down animals |
| recycle | reuse |
| renewable resources | resrouces that can be replaced or reused |
| thermal pollution | pollution of water by heat |
| watershed | controlling wasteful runoff of rain water |
| biodegradable | wastes broken down by microorganisms |
| endangered species | species that may disappear |
| natural resource | basics such as soil, water, air and energy |
| pollutant | something unsafe put into air, water or soil |
| smog | pollutant formed when warned by sunlight |
| strip cropping | type of soil conservation |
| technology | used to do work and solve problems |
