Who is responsible for the first measurement of the circumference of the Earth?
a. The Vikings
b. The Polynesians
c. Eratosthenes of Cyrene
d. Ptolemy
c
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For a surface storm system to intensify, the upper-level low would be located in which direction relative to the surface low?
A. east B. south C. west D. north
Any sediment composed of material from once living (organic) plants and animals are called biogenous sediment
Indicate whether the statement is true or false
Between the tropics, low angle of insolation, variable day lengths, and high seasonal variations create an energy deficit
Indicate whether the statement is true or false
Following the wind dispersal of seeds, a plant becomes established in a new environment. This is an example of
a. artificial selection. b. habitat selection. c. uniform distribution. d. habitat use.