Mammals became the dominant land animals during the ________ era
A) Pleistocene B) Mesozoic C) Cenozoic D) Cretaceous E) Paleozoic
C
Environmental & Atmospheric Sciences
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Approximately ________ of the world's population lives north of the equator (in the Northern hemisphere)
A) 10% B) 25% C) 50% D) 75% E) 90%
Environmental & Atmospheric Sciences
Which of the following is the name given to a discharge of electricity from or within a thunderstorm?
A. lightning B. static electricity C. St. Elmo's fire D. downburst
Environmental & Atmospheric Sciences
In addition to the lymph nodes, where are lymphocytes formed?
A) the bone marrow B) the pancreas C) the kidneys D) the spleen
Environmental & Atmospheric Sciences
In 1999 major protests against the WTO were made famous by what phrase?
A) Battle in Seattle B) Rumble in the Jungle C) Fracas in Jamaicas D) Showdown in Motown E) Strain in Spain
Environmental & Atmospheric Sciences