The study of how living beings interact with each other and the habitat where they live.
A collection of living beings (plants, animals, fungi) and the nonliving things (streams, rivers, sunlight, rocks, and soil) in the place where they live.
The first stage in an insect's life cycle.
The hole left in a tree trunk created by an insect as it chews its way out of the tree.
A tiny living being that can survive in extreme habitats where most living beings cannot survive.