The compilation and analysis of several studies on the matter proved that in the deep ocean, the first members of the kingdom ...

Scientists draw a critical distinction between the two, however, and understanding it can mean the difference between life and death in the animal kingdom (or kingdom animalia, if you're looking ...

Classification attempts to impose a hierarchy on the complex and dynamic variety of life on Earth by describing how different species group ... the highest rank and 'kingdom' is the second highest ...