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Classification

Science, Grade 6

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Table Of Contents: Classification

1. Why Do Scientists Classify Organisms?
There are millions of types of organisms that live on Earth. A classification system helps scientists study, record and share information about organisms in a systematic and useful way.
2. How Are Organisms Classified?
The science of classification is called taxonomy. Organisms are classified according to shared characteristics such as cell structure, physical appearance, how they obtain food and method of reproduction.
3. DNA Technology and Classification
DNA technology is also playing a role in classification. The study of gene sequences and mutations has enabled scientists to understand the evolutionary relationships between different organisms.
4. Levels of Classification
There are seven levels of classification—kingdom, phylum, class, order, family, genus and species.
5. Scientific Name
Each organism is identified by its scientific name, which includes the genus and species. For example, humans are called Homo sapiens.
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