| bush muhly(expression, plant, flora, producer) |
| cactus wrens(expression, animal, fauna, consumer) |
| canada goose(expression, animal, fauna, consumer) |
| carbohydrate(noun, biology, nutrition, component) |
| carbon dioxide(expression, element, pollution, chemistry) |
| carbon dioxide level(expression, environment, ecology, chemistry) |
| caribou(noun, animal, fauna, consumer) |
| caribou moss(expression, plant, flora, producer) |
| cassava(noun, plant, flora, producer) |
| catfish(noun, animal, fauna, consumer) |
| chimpanzee(noun, animal, fauna, consumer) |
| chuckwalla(noun, animal, fauna, consumer) |
| cockroaches(noun, insect, decomposer, macrofauna) |
| colobus monkey(expression, animal, fauna, consumer) |
| common kingsnake(expression, animal, fauna, consumer) |
| consumer(noun, ecology, ecosystem, enviroment) |
| corpse lily(expression, plant, flora, producer) |
| cotton grass(expression, plant, flora, producer) |
| cougar(noun, animal, fauna, consumer) |
| crab(noun, animal, fauna, consumer) |