| botany(noun, biology, study, science) |
| bottom of pyramid(expression, nature, feature, environment) |
| build ecological resilience(expression, nature, feature, environment) |
| bush(noun, nature, environment, part, world) |
| carnivore ecological niche(expression, nature, feature, environment) |
| carnivore niche(expression, nature, feature, environment) |
| case of ecological fallacy(expression, nature, feature, environment) |
| cause of ecological extinction(expression, nature, feature, environment) |
| center(noun, being, essence, quiddity, essentiality) |
| challenge of ecological crisis(expression, nature, feature, environment) |
| child's microsystem(expression, nature, feature, environment) |
| cholera study(expression, nature, feature, environment) |
| chronosystem layer(expression, nature, feature, environment) |
| climate(noun, atmosphere, context, ambient, clime) |
| clime(noun, atmosphere, context, climate, ambient) |
| close-knit ecological community(expression, nature, feature, environment) |
| close ecological relationship(expression, nature, feature, environment) |
| coffin separation(expression, nature, feature, environment) |
| coherent ecological network(expression, nature, feature, environment) |
| commensal interaction(expression, nature, feature, environment) |