Are spiders related to crabs? Study the order of arthropods with a reading selection about animal diversity. It provides details about each class within the order, as well as vivid pictures and explanatory charts. 

An informative lesson has learners read about, discuss, and study the classification, structure and importance of the following biomolecules: carbohydrates, proteins, lipids, nucleic acids, and enzymes. 

Processed foods use inorganic compounds for flavoring and preservation. This take-home laboratory challenges scholars to find 20 different compounds identified on the labels of foods to list on their data collection sheet. The activity...

Scientists look at the evolutionary history of organisms to divide them into kingdoms. For awhile, there has been 5 kingdoms, but many scientist are now using 6 kingdoms.

College-level instructor's notes describing taxonomy. Explanations and images give a chronological history of the science of classifying organisms.

Describes the characteristics of Archaea, Bacteria, and Eukarya, the three domains of life.

[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about types of stars and he life cycle of a star. Includes a few questions to check for understanding.

Extensive site that contains much information about the various animal phyla. Each phyla gives photos, common examples, scientific names and references. Collection of 1630 websites about bio-diversity.

An in-depth discussion on the classification systems of mosquitos: discusses the classification of Bates and Pratt and proposes a new classification system.

This page provides an introduction to phylogenetic systematics, the way that biologists reconstruct the pattern of events that have led to the distribution and diversity of life. A tutorial "journey" into the Introduction, Methodology,...

Explore the exciting world of the killer dinosaur, Tyrannosaurus Rex, by learning about its behaviors, geological time periods, and classification through descriptions, videos, photos, news, and external links.

Explore the exciting world of the woolly mammoth by discovering facts about its behaviors, habitats, geological time periods, and classification through news, photos, videos, descriptions, and external links.

Article explaining what viruses are, their evolution, taxonomy, morphology, and replication. Also covers mechanisms by which viruses cause disease, how they can impact on plants, and the potential and real benefits we get from...

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

Explains what differentiates ferns from other plants, their physical characteristics, taxonomy, life cycle, how they evolved, and where they occur.

We all know that the ocean is home to many beautiful and mysterious creatures. Mysterious cannot begin to describe the fish living in the depths of the ocean. Imagine the kind of creature that lives thousands of feet underwater! Sunlight...

These pictures of the Sea otter are comically adorable. Use this site to read a detailed fact sheet on the sea otter and to check out the photos.

This site is a description of the history behind the 5 Kingdom system suggested by Robert Whittaker. An extensive list of resources is included.

Explore the world of plants and all that encompasses the second biggest kingdom of classification.

An informative site from Sea and Sky that contains basic characteristics along with a number of beautiful pictures of the common marine reptiles.

The content of this site features photographs of the Pileated Woodpecker and audio content of his call. Students will have an opportunity to learn about this land bird's characteristics, range, habitat, diet, life cycle, and behavior...

The red-headed woodpecker can be found in woodlands throughout the United States east of the Rocky Mountains. The content of this site includes information on the characteristics, habitat, life cycle, range, behavior and diet of this...

This site examines the Ruffed Grouse a type of Running Bird. Learn more about this bird's characteristics, life cycle, behavior, diet, habitat, and range when you explore this source.

This site offers a clear and concise look at the Semipalmated Plover. The information covered in the source includes characteristics, habitat, life cycle, range, diet and behavior. You will also find clear photographs of this aquatic bird.