Where are B cells and T cells found?
A) only in the blood
B) only in the lymph
C) primarily in the blood, but some are in the blood
D) primarily in the lymph, but some are in the blood
D
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Oceanographers and seismologists further explored the theory of continental drift during the early- to mid-twentieth
century by correlating patterns of earthquakes and ____. a. volcanoes b. fault lines c. isostatic equilibrium d. tectonic plates e. convection currents
Rocks that are now tilted were deposited ____________________. Fill in the blank(s) with the appropriate word(s)
Which of the following is true of Earth's orbit about the Sun?
A) It is perfectly circular. B) It is elliptical. C) It takes approximately the same time for Earth to orbit the Sun as it does for the rest of the planets in the solar system to orbit the Sun. D) The orbit does not vary over millions of years.
Which acid, found in most groundwater, is responsible for most karst topography worldwide?
A) Hydrochloric B) Nitric C) Sulfuric D) Carbonic