The Animal Kingdom

The animal kingdom is very diverse and consists of both wild and domesticated types of animals. The animals are mainly divided into two main groups, the invertebrates, and the vertebrates. The vertebrates are animals with a backbone, or spine, and the invertebrates without. Invertebrastes include insects for example. The vertebrates are divided into five groups; fish, birds, amphibians, reptiles and mammals. There are many different types and species of animals in the animal kingdom. What might be some environmental changes that could influence that animal kingdom? Also, what are some human factors or activities that impact the animal kingdom and its population?