Source: The Environmental Protection AgencyI. The Ozone Layer The Earth's atmosphere is divided into several layers. The lowest region, the troposphere, extends from the Earth's surface up to about…
Tug the Heartstrings: Appeal to EmotionWriting WellWhy Not See It My Way?: Persuasion and ArgumentationA + B = C: Appeal to ReasonTake the High Road: Appeal to EthicsTug the Heartstrings: Appeal to…
Hypothalamus: The Head HonchoAnatomy and PhysiologyHormonesFeedback: Not Just for GuitarsHow Hormones WorkHypothalamus: The Head HonchoPituitary: The First LieutenantThyroidKidneys: Not Just for…
The Control CenterAnatomy and PhysiologyThe Central and Peripheral Nervous SystemsYou've Got Some Nerve!Gyri and SulciThe Control CenterSensory and Motor ControlThalamus: The Switching StationSpinal…
Alternative Methods of ClassificationSystematics, Taxonomy, and ClassificationIntroductionLinnaeusSystematics Analysis TechniquesAlternative Methods of ClassificationModern Classification The…
DistributionUnited StatesSouth AmericaIsle of WightSahara DesertGobi DesertAustraliaAntarcticaDinosaurs lived all over the world, but their fossilized remains are not easy to find, or even,…
Internal anatomyExternal anatomyTeeth for rakingTeeth for combingPillarlike legsProsauropodsThe biggest land animals to have lived on Earth were the sauropods, which means “lizard feet”. These…
AWESOME FORCEINSIDE AN ATOMSTATIC ELECTRICITYCURRENT ELECTRICITYFIND OUT MOREElectricity is not just something you buy in a battery. It is one of the basic ingredients of the Universe. Everything…
CLASS: MAMMALIADIVING PLATYPUSLEAPING DOLPHINFIND OUT MOREAll mammals are endothermic (warm-blooded), have some fur or hair on their body, and feed their young milk. They have a bony skeleton…
GATHERING BARKMEDICINAL JUICEFROM PLANTS TO MEDICINESFIND OUT MOREMany plants produce special substances in their roots, leaves, flowers, or seeds that help them to survive. For example, some…
