Animals are divided into two main groups. Animals that have a backbone are called vertebrates. Animals that don't have a backbone are called invertebrates. Vertebrates and invertebrates are ...
Scientists have recently described one of the world’s tiniest vertebrates: an adorable miniature toad species found in Brazil ...
Check if you have access via personal or institutional login Habitat loss and degradation are currently the main anthropogenic causes of species extinctions ... of threatened and recently extinct ...
The history of life on Earth dates back more than 500 million years, when complex-structured organisms emerged during the ...
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