首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Who would have thought we would become a planet of "ologies"? There’s biology, psychology, herpetology, etymology, and geology j
Who would have thought we would become a planet of "ologies"? There’s biology, psychology, herpetology, etymology, and geology j
admin
2021-06-15
30
问题
Who would have thought we would become a planet of "ologies"? There’s biology, psychology, herpetology, etymology, and geology just to name a few. However, one "ology" truly helps us to understand the most part of our planet, our environment. Ecology (which is filled with ecologists) is the study of ecosystems and the beings and organisms that inhabit those ecosystems. Just think, in condition of bees, deer and other organisms, you are important to ecologists.
Ecosystems are communities that vary in size and location. They can be as small as a patch of glass or as large as the entire biosphere. The many varieties of plants and animals that exist in our planet ecosystems are important to our ecosystems. Plants in particular provide oxygen and nutrients all organisms need to survive. These producers have the ability to use the sun’s energy to produce food (think photosynthesis) . This is where the animals and consumers become important. The animals get their energy by eating the plants and other organisms within the ecosystem. Without the producers and consumers, decomposers would not have a job. As you may have guessed, decomposers, like bacteria, step in to break down the waste excreted from animals and the remains of other organisms. Once broken down, the organic materials are absorbed by the soil and gases are sent back into our atmosphere. The whole process is ready to start again through the Earth’s natural cycles. There has to be a balance of producers, consumers, decomposers in order to remain a balanced ecosystem.
Remember, all organisms need matter and energy to survive. An ecosystem is balanced when matter and energy more efficiently through those ecosystems. Just as your backpack has a limit on the number of huge textbooks it can carry at any given time, all ecosystems have a limit on the populations they can maintain. Carrying capacity is the largest population an ecosystem can support at any particular time. The support of this population depends on the amount of resources (matter and energy) that are available and the movement of those resources within that ecosystem. If energy and matter are moving efficiently through an ecosystem, then the current population of plants and animals has not reached beyond the ecosystem’s carrying capacity. Once food resources dwindle or animal populations increase dramatically, the ecosystem may not be able to support those populations. Fortunately, nature has three ways to control the balance of ecosystems: ecological responses to change, energy transfer, and food chains and food webs.
We can infer from the article that in the ecosystem the job for the "decomposer" (Line 7, Paragraph 2) is to______.
选项
A、absorb the sun’s energy
B、produce oxygen and nutrients
C、break down the dung and the remains of dead organ
D、eat the plants and animals
答案
C
解析
文章第二段倒数第四句提到,“细菌之类的分解者一步步分解动物排出的废物以及其他生物的遗骸”,分析各个选项可知C为同义转述,因此,本题选C。
转载请注明原文地址:https://kaotiyun.com/show/MwTO777K
0
考博英语
相关试题推荐
Itisimportantthatnovelistsmeetthedemandsofthepeopleingeneral,buttheyshouldnot______tovulgarandunhealthytas
Theytossedyourthoughtsbackandforthforoveranhour,butstillcouldnotmake______ofthem.(2013年北京航空大学考博试题)
Intellectualpropertyisakindof______monopoly,whichshouldbeusedproperlyorelsewoulddisrupthealthycompetitionorde
Thedisagreementovertraderestrictionscouldseriously______relationsbetweenthetwocountries.(2015年北京航空航天大学考博试题)
Myeyeshadbecome______tothenowsemi-darkness,soIcouldpickoutshapesaboutseventy-fiveyardsaway.(中国科学院2011年3月试题)
OfcourseI’mnot______toassociatingwithsocietypeoplelikeyou.
Someyoungpeoplehavemadea(n)______bydevelopingprivatebusiness.
Itisa______thatinsucharichcountrythereshouldbesomanypoorpeople.(2006年中国矿业大学考博试题)
ResearchersatChildren’sHospitalofPittsburghannouncedtheyhaddiscovered______evidencethatavirusisinvolvedinwhat
Itmustguidepublicopinion,afterpresenting______bothsidesofeveryissueandpointingouttoreaderswhatmeasuresseemt
随机试题
患者,男性,40岁,暴饮暴食后突发上腹部剧烈疼痛,伴恶心、呕吐。查体:急症面容,脸色苍白,血压80/60mmHg,腹胀,腹肌紧张,有压痛和反跳痛,移动性浊音(一),体温39℃,实验室检查白细胞明显升高。该患者还应该急做哪些检查
男性,36岁,发现无痛性的锁骨上淋巴结肿大两月,且伴发热,盗汗,近几个月来自感体重减轻明显,偶尔出现皮肤的瘙痒,肝脾不大为进—步诊治有必要做下列哪项检查
A.呕吐物为隔餐食物,带腐臭味B.呕吐物为黄绿色,带粪臭味C.呕吐物为大量黏液及食物D.呕吐物为血液E.吐出胃内容物后仍干呕不止急性胆囊炎的临床表现是()
红细胞沉降率增大多由于
排烟井主要适用于()的区域。
下面叙述正确的是()。
西柏坡派出所民警小李,在工作期间,始终以高度的政治自觉,传承西柏坡红色革命精神。某日,小李在下班途中,听闻路人讨论反党的言论,及时上前制止并主动向路人普及中国共产党的先进性,分享西柏坡精神的内涵。其践行的人民警察核心价值观是()。
体操是一个结合了杂技和舞蹈的体育运动。它的魅力,在于那种刀锋上的平衡与美感,在于每一秒都让人()。运动员在空中翻腾的时候,即使不在现场的观众,也会不由自主地屏住呼吸,直到运动员稳稳落地。
《坎特伯雷故事集》的作者是________。
下列选项中不属于结构化程序设计方法的是
最新回复
(
0
)