| A | B |
|---|
| ECOLOGY | THE STUDY OF INTERACTIONS AMONG ORGANISMS AND THEIR ENVIROMENT |
| ABIOTIC FACTOR | NON-LIVING PARTS OF THE ENVIROMENTS |
| BIOTIC FACTOR | LIVING OR ONCE LIVING ORGANISM IN THE ENVIROMENT |
| POPULATION | ALL MEMBERS OF ONE SPECIFIES THAT LIVE TOGETHER |
| COMMUNITY | GROUP OR POPULATION THAT INTERACT TOGETHER |
| ECOSYSTEM | MADE OF THE BIOTIC COMM. AND THE ABIOTIC FACTOR THAT AFFECT IT |
| EXOSPHERE | PART OF THE EARTH THAT SUPPORT LIFE |
| POPULATION DENSITY | NUMBERS OF INDIVIDUALS IN A COUNTRY THEY OCCUPY |
| LIMITING FACTOR | ANY BIOTIC OR ABIOTIC FACTORS THAT LIMIT THE NUMBER OF INDIVIDUAL POPULATION |
| SYMBOISIS | ANY CLOSE INTERACTION BETWEEN TWO OR MORE SPECIES |
| NICHE | THE ROLE OF AN ORGANISM AND THE EGO SYSTEM |
| HABITAT | HOME OF THE ORGANISM |
