Can someone Summarize this for me??? The same is true of other "living fossils." This is partly because things are changing constantly at the cellular level. It is also because Darwin's major discovery, natural selection, is not the only evolutionary force. Math also plays a role. You can keep environmental conditions the same and remove selective pressures. However, mess with the numbers of creatures in a population, and evolution happens.
Natural selection is the best-known evolutionary force. There are many examples of it in recent times. Early in the Industrial Revolution, England's peppered moths were light-colored. This camouflaged them against the white bark of birch trees. Over a half-century, black dust from factories darkened the trees' bark. The moths darkened their coloring too. It happened through natural selection.
This example suggests that a population's biology should remain unchanging as long as everything in the environment remains the same.

Which of the following words best describes gregors life as expressed in this passage a.) excitingb.)surprisingc.)satisfying d.)demanding

How does crane's depiction of the way information was spread in the nineteenth century affect the novel? crane seeks to use the novel as a way to criticize the journalists of the time for how they glorified war as a means of union propaganda. by depicting the extent to which newspapers were circulated, crane seeks to expose the lack of unbiased reporting at the time. by giving newspapers a major role in the novel, crane seeks to make a connection between the increasing role of the military in national affairs and the decline of farming. crane captures the power of journalistic reports at a time when it was the primary means of transmitting information to a broad audience by showing its influence on henry.

What type of writing is demonstrated in this excerpt by general philip henry sheridan? at once i set about preparing for the examination which precedes admission to the military academy, studying zealously under the direction of mr. william clark; my old teachers, mcnanly and thorn, having disappeared from somerset and sought new fields of usefulness. the intervening months passed rapidly away, and i fear that i did not make much progress, yet i thought i should be able to pass the preliminary examination. that which was to follow worried me more and gave me many sleepless nights; but these would have been less in number, i fully believe, had it not been for one specification of my, outfit which the circular that accompanied my appointment demanded. this requirement was a pair of "monroe shoes." now, out in ohio, what "monroe shoes" were was a mystery—not a shoemaker in my section having so much as an inkling of the construction of the perplexing things, until finally my eldest brother brought an idea of them from baltimore, when it was found that they were a familiar pattern under another name. a. research essay b. persuasive essay c. biography d. memoir