| Term | Definition |
| What can a high velocity(speed) have on a river? | It increases the amount of sediment suspended in the water. |
| What could cause a decrease in a rivers disolved oxygen content? | An increase in salinity(salt). |
| What gas is produced in a landfill? | Methane |
| If contaminated water is released into the enviornment, what would happen? | Both water and land will become polluted. |
| If grass became contaminated from pollution, what would happen to the rest of the food web? | The entire food web would be contaminated. |