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Biggest
Land mammal: African elephants weigh up to 14,000 pounds and can eat as much as 600 pounds of food a day! Their trunks contain as many as 100,000 different muscles.
Marine mammal: The blue…
AURORASLAYERS OF THE ATMOSPHEREOZONE LAYERFIND OUT MOREPRESSURE SYSTEMSThe Earth would be as lifeless as the Moon without the atmosphere – a blanket of gases surrounding the planet and…
PENICILLIN HEALTH EDUCATION PREVENTATIVE MEDICINE DIAGNOSIS TREATMENT FIND OUT MORE
Medicine is the practice of dealing with diseases and injuries to the body. One of its most important…
Lyme DiseaseMosquito and Tick-Borne DiseasesIntroductionYellow FeverDengueWest Nile EncephalitisRocky Mountain Spotted FeverLyme Disease In 1977, a group of children in and around Lyme, Connecticut…
SymmetryGeometryTransformationsIsometriesDilationsSymmetry Just what is symmetry? Symmetry is one of those things that you can recognize but cannot put into words. Many words or phrases have a…
Anatomy of the HeartAnatomy and PhysiologyThe HeartAnatomy of the HeartThe Four ChambersThe Heart's Own BloodECG: Measuring a Beat The four-chambered heart is the result of millions of years of…
