In an ecosystem, the ___ of a species refers to the role it plays and the resources it uses. A. habitat B. population C. niche D. community 相关知识点: 试题来源: 解析 C。解析:选项A“habitat”指的是物种生活的栖息地,是一个地理区域;选项B“population”指的是种群,是同一物种个体的集合...
It helps control the population of the prey C. It has no effect on other species D. It only competes with other predators 相关知识点: 试题来源: 解析 B。解析:在生态系统中,捕食者有助于控制猎物的数量(helps control the population of the prey),从而维持生态平衡。捕食者不会使猎物灭绝(makes ...
Bees play an essential role in the ecosystem.They not only collect nectar (花蜜) to make honey but also help with pollinating (授粉) your plants.Sadly,bees are slowly becoming an endangered species on earth,with their numbers dwindling significantly.You,however,can help increase the populations ...
The ecological importance of common species for many ecosystem processes and functions is unquestionably due to their high abundance. Yet, the importance of rare species is much less understood. Here we take a theoretical approach, exposing dynamical models of ecological networks to small perturbations...
T he Living Habits of the Ugly SpeciesD. T he Proboscis Monkey Is Endangered 相关知识点: 力学 机械运动 运动的快慢 速度的公式 速度公式的应用 试题来源: 解析 【解析】1.C.细节理解题.根据文章第一段,Despite the vital role they play in many ecosystems, animals considered to be "ugly" are ...
The presence of unique bone protrusions in the fossil has led scientists to suspect it could be a completely new species. But the lack of comparable body parts in the fossil record of other terror bird species means that definitively announcing the La Venta find as a completely new type of ...
This is followed by an investigation of how these interactions accumulate to affect the distribution and ecology of other plant and animal species. Understanding ecosystem engineering effects of these "mega-herbivores," and how they differ from those of introduced, nonnative herbivores, is a vital ...
Elephants'importantroleinmaintainingbiodiversityandhealthyecosystemshasearnedthemvariousnamesincludingecosystemengineersandforestgardeners.However,Africanforestelephants—aspecieslivingintherainforestsofcentralAfrica—areincreasinglyrecognizedbyanothername:"climateheroes".Africanforestelephantshelplessenclimatechangebyincreasingcarbon...
The Ugiest Animal in the WorldB. The Ugly Species Are under ThreatC. The Living Habis of the Ugly SpeciesD. The Proboscis Monkey Is Endangered 2【题目】CDespi the via roethey ply n many ecosystems, animas considered to be "ugly” arebeig gord byiett. A suy hd ound ugr anias ...
A major challenge to understanding the role of species in ecosystems (Lawton 1994) is to collect and filter those pieces of information from different levels of organization that are likely to affect ecosystem functioning and maintenance of key processes; for example, the approaches that link ecosyst...