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Cnidarians have specialized stinging cells called cnidocytes
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
Socrates (470–399 B.C.E.) was an Ancient Greek philosopher often called the "father of ...
Children with disabilities used to be sent to special schools. In a process called mainstreaming or ...
A nerve cell (neuron) has extensions called dendrites