首页
登录
职称英语
The waters east of Cape Hangklip were once the center of a lucrative wild-ca
The waters east of Cape Hangklip were once the center of a lucrative wild-ca
游客
2025-02-19
8
管理
问题
The waters east of Cape Hangklip were once the center of a lucrative wild-caught abalone fishery, but illegal fishing in the mid-1990s escalated to such levels that the recreational fishery was closed in 2003. When abalones did not rebound, commercial fishing was also banned. Continue declines in abalone were attributed to poaching, but an invasion by rock lobsters during the early 1990s probably intensified the trend. Rock lobsters prey on sea urchins, and increased rock lobster densities coincided with significant decreases in urchins. In that area, urchins feed largely by trapping drift kelp, and in doing so provide juvenile abalone with both protective shelter and nourishment. Without urchins’ presence, juvenile abalones are less likely to survive to adulthood. [br] According to the passage, since the early 1990s, sea urchins in the waters east of Cape Hangklip have
选项
A、significantly changed their feeding habits
B、suffered increased predation from a certain species
C、experienced increased competition for kelp, their main source of nourishment
D、seen a sharp decline in the availability of kelp, due to environmental changes
E、rebounded as commercial fishing in the region has declined
答案
B
解析
原文关于海胆有两个信息,一是被岩龙虾捕食了,二是其觅食行为可以保护小鲍鱼。a certain species对应rock lobster,根据文章第四句,海胆遭受了来自岩龙虾越来越多的捕食。A项文中未提及。C项文中未提及。D项文中未提及。E项文中未提及。
转载请注明原文地址:https://tihaiku.com/zcyy/3964140.html
相关试题推荐
ThewaterseastofCapeHangklipwereoncethecenterofalucrativewild-ca
ThewaterseastofCapeHangklipwereoncethecenterofalucrativewild-ca
SanLorenzo,centeroftheancientMesoamericanOlmecculture,isfamousfor
SanLorenzo,centeroftheancientMesoamericanOlmecculture,isfamousfor
Theaveragetemperatureofthelobster-richwatersoffthecoastofFoerklan
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
随机试题
[originaltext]Weallscreamforwaterwhenthirsty.Butdoyouknowthatin
A.补充血容量,纠正酸中毒 B.防治各种类型的休克,如出血、创伤、烧伤中毒和感
下列各项,不属闭经气血虚弱证主要症状的是( )。A.月经后期,渐至闭经 B.
男,54岁。幼年患麻疹后反复咳嗽,迁延不愈,常咳脓痰伴咯血。近2周咳嗽加重,咳大
在抗原抗体反应中,作为抗原抗体稀释液的NaCl溶液的浓度是A.0.70%B.0.
不符合缺铁早期实验室指标的是A.血清铁减低B.红细胞形态正常C.铁粒幼细胞正常D
二极管应用电路如图所示,图中,uA=1V,uB=5V,设二极管均为理想器件,则输
中央经济工作会议2012年12月5日至16日在北京举行。会议认为,做好2013年
乙型脑炎主要的死亡原因是A.过高热 B.脑水肿、脑疝形成 C.中枢性呼吸衰竭
依据《煤矿建设项目安全设施监察规定》,关于煤矿施工和联合试运转的说法正确的是(
最新回复
(
0
)