The plant tissue responsible for conducting water and nutrients up from the roots is the
A. xylem.
B. leaf.
C. stomata.
D. phloem.
Answer: A
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Sound waves can interfere with one another so that no sound is heard.
A. True B. False C. Almost, but not quite. D. none of the above
The Hjulstrom curve is a plot of:
a. velocity vs. particle diameter b. shear stress vs. particle diameter c. velocity vs. shear stress d. discharge vs. stream capacity
As Earth revolves around the Sun, Earth's axis remains parallel to its former positions. What is this characteristic called?
a. repeated inclination b. parallelism c. true bearing d. angle of incidence e. ecliptic
List three economic materials that can be profitably extracted from placer deposits
A) Gold, platinum, and tin B) Diamonds, iron, and quartz C) Sand, gravel, and silt D) Granite, basalt, and gabbro