According to the fossil record on Earth, the earliest-known life-forms lived in sea floor rocks about 3.5 ________ years ago
A) billion
B) million
C) trillion
D) thousand
A
Environmental & Atmospheric Sciences
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If waves approach the shore at an angle, they
A) die out before they reach the shore. B) begin to break in water depths deeper than the wave base. C) bend so they approach the shore more directly. D) do none of these because waves do not approach the shore at an angle.
Environmental & Atmospheric Sciences
Vent communities are very rare; only one or two are known, and those are located near the Galápagos islands
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Most hurricanes have fronts
a. true b. false
Environmental & Atmospheric Sciences
The Cenozoic era is the age of mammals
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences