| A | B |
|---|
| aeration | addition of air to water |
| coagulation | when dirt in water are chemically "stuck" together |
| sedimentation | when gravity pulls heavier particles in liquid to the bottom of the container |
| producer | plants-lowest level of food in a food web |
| primary consumer | plant eaters, herbivores |
| secondary consumer | meat eaters who eat herbivores |
| tertiary consumers | carnivores who eat secondary consumers |
| decomposer | bacteria or fungi that break down dead plant and animal matter so that it enriches the soil and helps plants to grow |
| landfill | system of disposing wastes by burying them between layers of the earth |
| groundwater | water that sinks into the earth to supply wells and springs |
| leach | the action of liquids seeping through solid materials, picking up substances that dissolve in water in the process |
| liner | plastic and clay layers used in landfills to try and prevent garbage from getting in the groundwater |
| biodiversity | the presence of many different living organisms that signals the general health of a habitat |
| food web | the interdependence of all living organisms on one another |
| toxins | substances that can harm a persons health if it gets into the food web or drinking water |
