In this biology worksheet, learners complete a five question on-line interactive multiple choice quiz about animal biology. This quiz has more advanced material.

A brief explanation of life cycle is provided along with pictoral respresentations of three different examples of life cycles (apple tree, butterfly and frog). The term metamorphosis is introduced and the resouce has an interactive...

Learn about the element carbon and its importance on the Earth's atmosphere and sustainability of life on the planet. Additionally, understand the role the carbon cycle plays in global climate change over time.

Use this tutorial to enhance your understanding of how the human immunodeficiency virus invades healthy cells of the immune system. [3:15]

[Free Registration/Login may be required to access all resource tools.] The life cycle of a plant is very different from the life cycle of an animal. Humans are made entirely of diploid cells (cells with two sets of chromosomes). Our...

[Free Registration/Login may be required to access all resource tools.] The process of cell division in eukaryotic cells is carefully controlled. The cell cycle is the life cycle of a cell, with cell division at the end of the cycle....

PetCoach offers a full description of hookworms, a common intestinal parasite often found in dogs and cats but with the ability to infect humans. Content explores the life cycle of hookworms, the signs and symptoms of a hookworm...

Article explaining the importance of carbon as the basis for life, carbon dioxide's role in photosynthesis and respiration, carbon in the ocean and lithosphere, the impact of human activities on the carbon cycle, carbon that seems to be...

Lots of information about the black carpenter ant. Learn about their physical characteristics, colonies, life cycle, food sources, and predators. A detailed chart listing many plants and animals permits exploration of their relationships...

Extensive article on mangroves. Covers classification, physical characteristics, life cycle, habitat, economic value, and natural and human threats to their survival.

Learn about viruses of humans and other animals, the Baltimore classification system, and the HIV life cycle.

[Free Registration/Login Required] This flipchart is set up to either teach or review the life cycles of humans, butterflies, frogs, and ducks.

Explore the human body's need for a normal cycle of dark and light and apply this to an understanding of biological clocks in other animals. Test the effect of light on the development of mealworm larvae into adults.

Students learn what insects are, how they live, how they find food, how they defend themselves, and how they affect humans. Organized into several articles accompanied by high-quality photos and video, this online exhibit provides...

In this whiteboard lesson, students explore the stages of human life and draw comparisons with different animals. A variety of diagrams are provided to help communicate this concept.

[Free Registration/Login Required] Through this unit, children learn that plants and animals reproduce as part of their life cycle and that in every life cycle there are distinct processes and stages. They should begin to understand how...

This collection of six images captures the magnificence of human development -- the transformation from baby to woman.

An introduction to our solar system: the planets, our Sun and our Moon. Students begin by learning the history and engineering of space travel. They make simple rockets to acquire a basic understanding Newton's third law of motion. They...

What exactly happens when you ovulate? This tutorial explains what happens including what hormones are released and when.

This landing page includes learning modules on the following topics of: animals, plants, microorganisms, life cycles and reproductions, food chains, habits, humans and the environment, adaptation, inheritance, and evolution.

Join NASA in its study of oceanography and learn about the Earth system, the physical ocean, and life in the ocean. Try out the Giovanni: Earth Data Visualization Tool and access satellite-derived data to enhance the learning experience.

Describes types of flatworms that are parasitic to humans and animals and what their life cycle looks like. Two or more hosts are needed for them to complete their life cycle.

What is an amphibian? Kids learn about these cold blooded animals including salamanders, frogs, and toads. Lifecycle such as tadpole and metamorphosis.

Primates are a group of mammals that include apes, humans, monkeys, and prosimians. Primate characteristics and anatomy are explored, as well as life cycles, behavior and diet. Human impacts on other primate species have been...