| | | Falcons Falcons are a group of birds of prey that includes 37 species. Falcons fall into several general groups including the kestrels, the hobbies and their relatives, the peregrine falcon and... Read more | Facts About Amphibians Amphibians are a group of vertebrates that include three groups: newts and salamanders, frogs and toads, and caecilians. Find out more about amphibians.... Read more | Communities and Ecosystems Nature is a mosaic of complex interactions and relationships between animals, plants, and their environment. Individual organisms belong to populations, species, communities, and ecosystems. Energy flows from one organism to... Read more | Invertebrates Invertebrates are a diverse group of animals that includes over 30 phyla. Invertebrates do not have a backbone, nor a bony skeleton. This large group of animals includes sponges, cnidarians, flatworms, roundworms, segmented worms, molluscs, echinoderms, and arthropods. About 97 percent of all known species are invertebrates. The articles listed below provide information about the characteristics, classification and evolution of invertebrates. | | | | Animals / Wildlife Ads | | | | More about Animals | | | | | More from About.com | | | | | | Financial Emergencies An unexpected change in your financial situation can be incredibly stressful. Here's how to cope. More>
| | | | Retirement Planning Learn the top five things you need to do in order to start building a retirement nest egg. More>
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