| A | B |
|---|
| population | all of the individuals of one speciesoccupying a particular area |
| carrying capacity | the largest number of individuals of a particular species that the environment can support |
| pollutants | substances that contaminate the Earth |
| stream discharge | the volume of water flowing past a certain point per unit of time |
| sanitary landfill | where waste is deposited properly |
| hazardous waste | waste that is posionous, can catch fire, or can cause cancer |
| enzymes | speed up the chemical reactions |
| conservation | careful use of Earth materials to reduce damage to the environment |
| composting | piling yard waste where it can decompose gradually |
| recycling | using materials again |
