| soil(noun, geology, environment, fossil) |
| solar system(expression, system, space, sun) |
| temperature(noun, environment, factor, climate) |
| water level(expression, environment, water, level) |
| bamboo(noun, plant, flora, producer) |
| bromeliads(noun, plant, flora, producer) |
| earthworms(noun, insect, decomposer, macrofauna) |
| microbes(noun, bacteria, decomposer, macrofauna) |
| acacia ant(expression, animal, fauna, consumer) |
| air plants(expression, plant, flora, producer) |
| american alligator(expression, animal, fauna, consumer) |
| anteater(noun, animal, fauna, consumer) |
| apple(noun, plant, flora, producer) |
| apricot mallow(expression, plant, flora, producer) |
| arctic azaleas(expression, plant, flora, producer) |
| arctic bumble bees(expression, animal, fauna, consumer) |
| arctic ground squirrel(expression, animal, fauna, consumer) |
| arctic hare(expression, animal, fauna, consumer) |
| arctic moss(expression, plant, flora, producer) |
| arctic peregrine falcon(expression, animal, fauna, consumer) |