A structure built perpendicular to shore to enlarge a beach or prevent erosion is a(n)
____________________. Fill in the blank(s) with the appropriate word(s).
groin
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Drops of water that drip from a leaky faucet become
A. farther apart as they fall. B. closer together as they fall. C. a fixed distance apart as they fall. D. none of the above
The most important distinction for dividing the world into agricultural regions is
A) whether the product is consumed on or off the farm. B) whether crops are grown or animals are raised. C) the location of the first agriculture. D) the population density of the crop-producing region. E) All of these are important distinctions.
Whether using a food crop as a source of biofuels is environmentally sustainable would depend upon all of the following, EXCEPT ________
A) the corporate profits that would be made B) the amount of fertilizers used and their impact on aquatic ecosystems C) the amount of pesticides used and their impact on biodiversity and groundwater D) the impact on food supplies and prices E) the amount of water and land necessary for the crops
Compare and contrast cratons and mobile belts. What types of rocks are they composed of and
what are the relative ages of these rocks? Provide specific examples of cratons and mobile belts. What will be an ideal response?