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Did you know?
Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
Schematic of the Earth–Moon system (without a consistent scale)
Organization of the nervous system.
The male reproductive system.
Female Reproductive System
US federal budget deficit/surplus and debt
Main components of the human endocrine system and the effects of their secretions