About Mostly Every kinds, and different kinds. Not sure execatly how many though.
Hope this helps. Maz!
taxonomy.
DNA is the answer.
A scientists uses an organisms genetic and shared physical traits.
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scientists use scientific method as a tool to answer their questions or hypothesis.
naming the species, grouping the species.. and more
Proteins
Geologists are the scientists that process gold and search for fuels and minerals. Geologists focus on the organisms of the planet and protecting the Earth's environment.
first scientists grouped organisms into groups . Each group was called phylum. Then they separated each phylum into smaller and smaller groups called class
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carbon dating
Scientists get information from research, observations, experiments, and other scientists.