|
endangered
species
|
A specific species that is at risk for extinction due to natural and human forces. |
| evolution
|
The idea that all things living developed from very few simple life forms through several physical changes. |
| extinct |
When something is completely gone and doesn't return. |
| greenhouse
effect |
The retention of radiation from the sun into the earth's atmosphere that creates a rise in the temperature of the earth's surface. |
| habitat
|
A specific dwelling place where an animal lives. |
| insecticide
|
Something that eliminates insects. |
| atmosphere
|
The specific gas that surrounds the earth. |
| ozone
|
A type of oxygen that is produced by electricity and is in the air, mostly after a thunderstorm. |
| poacher
|
A person who trespasses, usually to hunt or fish illegally. |
| pollution
|
The process or act of defiling. |
| smog
|
The combination of smoke and fog in the air. |
| biosphere
|
The area that surrounds the earth that may support life. |
| conservation |
The act of preserving; to keep from being used up or lost. |