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...

Horse flies and deer flies are significant pests to both humans and animals. This site describes their life cycles, feeding patterns, and some methods of controlling them.

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

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.

Provides photographs and a fact card about common rats. Discusses where they are found, why they are seen as pests, predators, how humans use them for food and as pets, their life cycle, physical appearance, and diet.