A toxic pesticide found to accumulate in the food chain and cause the death of animals which were only indirectly exposed.

To decay, to rot; to break down into smaller particles.

An organism that breaks down cells of dead plants and animals into simpler substances.

The process of breaking down complex materials into simpler substances. End products of much biological decomposition are carbon dioxide and water.

The long tube where food is broken down into forms an animal can use. It begins at the mouth and ends at the anus.

To cut open in order to examine and identify internal structures.

To go into solution.

The top surface of an earthworm.