Evaluate which agriculture system—dry farming, irrigation, qanat—seems most promising to meet future food needs
What will be an ideal response?
Answers should describe each type of farming and the resources necessary for each.
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Zero net force acts on a loop of wire in a magnetic field when
A. no current is in the loop. B. no magnetic field lines pass through the loop. C. both of these D. neither of these
Which characteristics are used to determine the processes that created a rock?
A) Heat and pressure B) Texture and composition C) Size and shape D) Color and texture
You examine a rock that has large mineral crystals that are clearly visible. On those mineral crystals, you notice that there are numerous flat smooth surfaces, all oriented in the same directions within each specific mineral. The likely explanation for this is
A. the minerals are exhibiting cleavage surfaces. B. the minerals grew that way as the sediments were deposited. C. the minerals were forced into this orientation by the extreme heat and pressure associated with the formation of the rock. D. the minerals have grown into one another at exactly the same angles. E. None of these choices are correct.
The speed of a shallow water wave changes with depth, but the length of a wave does not change.
Answer the following statement true (T) or false (F)