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What is a Biological Species?

There are at least two million biological species living on Earth. They come in all different shapes and sizes and live in various environments.

It is thought that all the biological species currently living on Earth evolved from a single species of living organisms. But how did a single species come to create over two million species (even more if we include the species we haven’t discovered yet and species that have gone extinct)? Furthermore, how did biological species come to possess so many different traits?

It seems simple when you think about it, but almost all biological species can live and procreate in their environments. The different traits biological species possess are useful for survival in the various environments in which they live.

Conversely, it can also be said that the various traits biological species possess illustrate the diversity in Earth’s environment.

So what does the evolution of species show? Why would one species, which inhabits one environment, split into new, different species? Through understanding the reason for this, we can better understand the nature and effects of changes in the environment.

The differences between various species reveal the evolutionary paths biological species take. Larger differences can closely resemble separation into entirely separate species (although it is not the same). Biological species can also be further divided into genus, family, order, class, phylum, and kingdom. Knowing about the classification of an organism helps us understand its evolutionary history.

Biological Classification

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