According to Figure 14.5, the B horizon is most depleted in ________
A) calcite
B) clay minerals
C) iron oxide/hydroxide minerals
D) organic matter
Answer: D
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Marine communities evolve more rapidly than terrestrial communities. Indicate whether the statement is true or false
Ruben has a new puppy and wants to feed it the best possible food. He decides on an experiment where he will feed it the very best canned food plus a dietary supplement of vitamins recommended by a veterinarian
Which of the following best describes Ruben's project? A) Ruben needs to take careful measurements of the puppy's weight and height at least once a week for it to be a good experiment. B) This is an example of an excellent, controlled experiment as it is written. C) Ruben needs to use his mother's 6-year-old chocolate shar-pei to feed a standard diet so he can compare his puppy with a control dog. D) Ruben needs to control for the amount of exercise, sunshine, water, and care that the puppy gets each week, so that they are equal from week to week. E) This is not an experiment—there are no controls or replicates.
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Indicate whether the statement is true or false