« on: April 29, 2005, 04:00:45 PM »
i hate the science/nature ones:
Mature white pines intercept almost all the sunlight that shines on them. They leave a deep litter that dries readily, and they grow to prodigious height so that, even when there are large gaps in a stand of such trees, little light reaches the forest floor. For this reason white pines cannot regenerate in their own shade. Thus, when in a dense forest a stand of trees consists of nothing but mature white pines, it is a fair bet that__.
Which one of the following most logically concludes the argument?
A) the ages of the trees in the stand do not differ from each other by much more than the length of time it takes a white pine to grow to maturity
B) the land on which the stand is now growing had been cleared of all trees at the time when the first of all white pines started growing
C) competition among the trees in the stand for sunlight will soon result in some trees' dying and the stand thus becoming thinner
D) other species of trees will soon begin to colonize the stand, eventually replacing all of the white pines
E) any differences in the heights of the trees in the stand are attributable solely to the differences in the ages of the trees
what? i just cant figure this out and im not understanding the passsage, especially the phrases, "deep litter that dries readily," "regenerate in their own shade," and "large gaps in a stand." im not a science guy and i feel this ? is a little overly-technical.
if you want to know the answer its positioned exactly in the middle of this sequence: