Describes the behavior of different kinds of ducks and, in particular, discusses how all ducks use preening to keep their feathers dry.

Describes the characteristics of the redwood trees.

Briefly introduces various types of dinosaurs whose skeletons and reconstructions are seen in museums and explains how scientists uncover, preserve, and study fossilized dinosaur bones.

Discusses how scientists, studying fossil remains, provide information on how dinosaurs lived millions of years ago.