Examlex
The eruption of Mount Pinatubo in June 1991
Oldowan Tool Tradition
The first stone tool industry beginning between 2.5 and 2.6 million years ago.
Human Ancestors
Prehistoric beings and early hominids that preceded and contributed genetically and behaviorally to the modern human species.
Homo Habilis
An extinct species of early humans, known for its use of basic stone tools, living approximately 2.1 to 1.5 million years ago.
Australopithecines
A genus of hominids that lived in Africa between about 4 to 2 million years ago, known for walking upright and being a direct ancestor of modern humans.
Q8: On Earth between 30° and 60° north
Q62: By current estimates,groundwater provides approximately 25% of
Q73: Derechos are<br>A)straight-line winds associated with thunderstorms.<br>B)associated with
Q74: Climatic regions are characterized by distinctive weather
Q87: Desalination removes organic compounds,debris,and salinity from seawater
Q90: The hydrologic cycle<br>A)is the groundwater component of
Q118: If the amount of water vapor in
Q150: Discuss nonconsumptive use,consumptive use,and instream use as
Q190: Discuss the similarities and differences of cloud-albedo
Q223: Maritime locales tend to have much larger