| A | B |
|---|
| NATURAL SELECTION | ORGANISMS WITH BENEFICIAL VARIATIONS SURVIVE TO REPRODUCE |
| ADAPTATION | VARIATION THAT INCREASES AN ORGANISM'S CHANCES OF SURVIVAL |
| VARIATION | SOMETHING THAT MAKES AN ORGANISM DIFFERENT FROM OTHERS IN ITS SPECIES |
| TYPE OF CELL THAT LACKS MEMBRANE-BOUND ORGANELLES | PROKARYOTIC |
| TYPE OF CELL THAT HAS A NUCLEUS | EUKARYOTIC |
| PROKARYOTIC CELLS | HAVE CIRCULAR DNA |
| EUKARYOTIC CELLS | HAVE MEMBRANE-BOUND ORGANELLES |
| HOMOLOGOUS STRUCTURES | STRUCTURES THAT ARE SIMILAR BECAUSE THEY DEVELOPED FROM A COMMON ANCESTOR |
| GEL ELECTROPHORESIS | USED TO IDENTIFY SIMILARITIES AND DIFFERENCES BETWEEN DNA AND PROTEINS |
| SUCCESS | MOVEMENT OF A COMMUNITY TOWARD A STABLE SITUATION CALLED A CLIMAX COMMUNITY |
| ENERGY PYRAMID | REPRESENTS THE DECREASE IN AVAILABLE ENERGY IN EACH TROPHIC LEVEL |
| BIOMASS PYRAMID | REPRESENTS THE DECREASE IN DRY MASS OF ORGANISMS IN EACH TROPHIC LEVEL |
| TROPHIC LEVEL | INCLUDES A GROUP OF ORGANISMS THAT ALL OBTAIN THEIR NUTRIENTS FROM SIMILAR SOURCES |
| NICHE | ROLE OF AN ORGANISM IN AN ECOSYSTEM |
| ABIOTIC FACTOR | CHARACTERISTIC OF THE NONLIVING ENVIRONMENT |
| BIOTIC FACTOR | CHARACTERISTIC OF THE LIVING ENVIRONMENT |
| TEMPERATURE, HUMIDITY, RAINFALL, SPACE, SOIL, ETC. | EXAMPLES OF ABIOTIC FACTORS |
| BIRTH RATE, POPULATION SIZE, DIET, ETC. | EXAMPLES OF BIOTIC FACTORS |
