| bioactive(adjective, activity, biology, ecology) |
| biohazard(noun, biology, environment, hazard) |
| biometrics(noun, characteristic, analysis, authentication) |
| biomarker(noun, biology, environment, marker) |
| climatic factor(expression, environment, factor, climate) |
| coyote(noun, animal, creature, fauna, being) |
| emotional factor(expression, psychology, emotions, factor) |
| forest ecosystem(expression, ecology, ecosystem, enviroment) |
| abiogenesis(noun, ecology, ecosystem, enviroment) |
| biostatistics(noun, medicine, biology, statistic) |
| decisive factor(expression, decision, factor, final) |
| geological factor(expression, geology, environment, factor) |
| key factor(expression, result, fact, factor) |
| lifestyle factor(expression, environment, factor, lifestile) |
| light intensity(expression, environment, light, factor) |
| lynx(noun, animal, fauna, consumer) |
| physical environment(expression, environment, ecology, ecosystem) |
| pollution(noun, ecology, ecosystem, enviroment) |
| population(noun, environment, society, people) |
| producer(noun, ecology, ecosystem, enviroment) |