| A | B |
|---|
| krill | tiny ocean animals that can be used for food |
| phytoplankton | most of earth's oxygen is made by this |
| reservoirs | created or made by dams |
| kelp | a kind of seaweed |
| nonrenewable resource | it cannot be replaced |
| pollutant | a substance that is harmful to the environment |
| scrubbers | removes sulfur dioxide from burning coal |
| conservation | helps resources last longer |
| nodule | lump of minerals found on ocean floor |
| ore | a rock containing a valuable mineral |
| recycle | when you reuse a resource |
| vent | an opening in the ocean floor |
| alternative energy source | solar power is an example |
| renewable resource | resource that can be replaced |
