Prep CR2 Question 69

nicboy

69.        (25194-!-item-!-188;#058&001228)

Whichof the following most logically completes the reasoning?
Whenspecies are extensively hunted, individuals that reach reproductive maturityearly make up a larger proportion of the population, because they have a betterchance of reproducing.  When species facediminished food resources, on the other hand, individuals tend to take longerto reach reproductive maturity.  Theseconsiderations may help settle whether the primary cause of the gradualdisappearance of North America's mastodons,prehistoric animals related to elephants, was diminished food resources orhuman hunting, since __________.
A.from the location of certain hunting weapons in juxtaposition with mastodonremains, it is possible to determine whether those weapons were used to huntmastodons
B.the average age at which mastodons reached reproductive maturity can beestablished from mastodon tusks, of which there are many fossils dating fromdifferent periods
C.from the remains of mastodons already discovered, it can be accurately estimatedwhen mastodons became extinct
D.from tusks and other bones, it is possible to determine whether male and femalemastodons reached reproductive maturity at about the same age
E.it is possible to determine whether the earliest human dwellings constructedfrom mastodon tusks and bones come from an earlier period than the earliesthunting weapons unambiguously associated with mastodon remains


Anyone know how to answer this. Thx

judydongxueni

是选b么？

sallyruru

是的~

judydongxueni

如果知道了大象的性成熟年龄，那么按照题干的理论就知道大象这个种族是不是减少了呀