Evidence for the Big Bang includes the ____
a. blue-shift of adjacent galaxies
b. presence of background radiation
c. warm temperature of the universe
d. separation of the four fundamental forces
e. uniform speed at which galaxies are moving away from Earth
b
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How is groundwater flow primarily controlled?
a.) through the water table b.) by the surrounding rocks c.) by gravity d.) by the location of streams at the surface
The earliest Homo species was ____
a. Homo erectus b. Homo sapiens c. Ardi d. Lucy e. Homo habilis
The northern supercontinent consisted of:
a. North America, Europe, Asia, India, and Greenland. b. North America, Greenland, and Europe. c. North America, Europe, Asia, and India. d. North America, Greenland, Asia, and India. e. North America, Europe, Asia, and Greenland.
A(n) ________ is another way in which a food chain can be conceptualized
A) sedimentary cycle B) open system C) food pyramid D) final link at the apex E) way of gaining energy at every step