life cycles (biology)

An introduction to the life cycle of the butterfly.

Introduces the life cycle of the cow.

Introduces readers to the life cycle of plants.

Traces the life cycle of an earthworm from cocoon to adult, and includes information about earthworm anatomy, eating, tunneling, and earthworm watching.

An introduction to life cycles for students in grades three to six, examining the life cycles and reproduction of several different animals, discussing genes and heredity and the genetic link between modern birds and dinosaurs, exploring behavior and instinct, and looking at the structure and function of cells.

Presents colorful photographs and illustrations that describe the life cycle of various species of plants and animals including arthropods and amphibians, reptiles, fish, birds, mammals, rodents, and humans.

Photographs and easy-to-follow text explain the life cycle of a frog, describing how it hatches from an egg and grows from a tadpole into a frog.

Traces the life cycle of a flower from seed to maturity, and includes information about pollination, making and spreading seeds, other ways of growing, and threats to their survival.

Describes the parts, growth and life cycle of the plants.