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…
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…
CHANGING SHAPESHAPE MEMORY METALStretchSTRENGTHCRYSTALLINE STRUCTUREFIND OUT MORESolids are one of the three states of matter and, unlike liquids or gases, they have a definite shape that is not…
HOW MANY ELEMENTS ARE THERE? WHICH ARE THE MOST COMMON ELEMENTS? METALSPERIODIC TABLEFIND OUT MOREA substance made up of one kind of atom is an element. Gold is an element because it only contains…
Mount Taylor in Grants, New Mexico is among American sites most at risk by Elizabeth Olson America's Most Endangered Places America's Most Endangered Places 2007America's Most Endangered Places…
