• Sketchite
Sketchite

对某地区新引入一种鸟的种群增长率1 7年的调查研究得到的数据如下表下列对该鸟种群描述正确的是年份 第1年 第2年 第3年 第4年 第5年 Template






Link:
sketch 4876 Luffy by Nycole Prietsch
sketch 4995
sketch 3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )
sketch 5174
sketch 2560
sketch 3083 Great illustration Ali Hänel
sketch 5100 Shadow by An Nguyen
sketch 4905 The Little Prince by Gaurav Patel

You need a modern browser try chrome, to view this.
Background image: Hide Show

View Larger Image Image Credit: 1010jiajiao.com

sketch 5165 Marceline by Marvin Chrome
sketch 2393
sketch 3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )
sketch 2664
sketch 3613
sketch 3554 Dr. House by Carrieann Benthem
sketch 378 Guess what flag? ɔılqndǝɹ ɥɔǝzϽ
sketch 3517 Scratch from Ice Age by VlAd Craciun





Try and sketch some of theseMeasles, Fiddler, Farmer, Noodles, Cross, Cards, Slingshot, Breakfast, Coffin, Glasses, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?
view like
sketch #5073 Broken Heart by Islam Mourad
anonymous
anonymous
sketch #5073 Broken Heart by Islam Mourad

view like
sketch #2559 sun
anonymous
anonymous
sketch #2559 sun

view like
sketch #3535 Mickey by Hakan Usuğ
anonymous
anonymous
sketch #3535 Mickey by Hakan Usuğ

view like
sketch #293 jdjdjdjdj
Helyryn
sketch #293 jdjdjdjdj

view like
sketch #5185
anonymous
anonymous
sketch #5185

view like
sketch #5350
anonymous
anonymous
sketch #5350

view like
sketch #5260
anonymous
anonymous
sketch #5260

view like
sketch #5230
anonymous
anonymous
sketch #5230

view like
sketch #3732 Michael Jackson by David Obando
anonymous
anonymous
sketch #3732 Michael Jackson by David Obando

view like
sketch #3298
Hank Henry Armstrong
sketch #3298

view like
sketch #5287
anonymous
anonymous
sketch #5287

view like
sketch #5218 Marshall Lee Dj-ionut Manelomania
anonymous
anonymous
sketch #5218 Marshall Lee Dj-ionut Manelomania

view like
sketch #3680 Infected Mushroom by Rohit Rahul
anonymous
anonymous
sketch #3680 Infected Mushroom by Rohit Rahul

view like
sketch #5052 Gorillaz by Rafał Dawid
anonymous
anonymous
sketch #5052 Gorillaz by Rafał Dawid

view like
sketch #3039 Anonymous by Gootee Jaroonsit
anonymous
anonymous
sketch #3039 Anonymous by Gootee Jaroonsit

view like
sketch #4362 cow
anonymous
anonymous
sketch #4362 cow

view like
sketch #2818 Hellboy by يآآسر محمد
يآآسر محمد
sketch #2818 Hellboy by يآآسر محمد

view like
sketch #5013 Pursuing Dreams by Mário JBudo
anonymous
anonymous
sketch #5013 Pursuing Dreams by Mário JBudo

view like
sketch #4691 Itachi by Jaqueline Salazar
anonymous
anonymous
sketch #4691 Itachi by Jaqueline Salazar

view like
sketch #1079
anonymous
anonymous
sketch #1079

view like
sketch #5172 Cheshire Cat by Juan Garcia
anonymous
anonymous
sketch #5172 Cheshire Cat by Juan Garcia

view like
sketch #4582 Pikachu by Mariana Sanchez Acevedo
anonymous
anonymous
sketch #4582 Pikachu by Mariana Sanchez Acevedo

view like
sketch #1477 123 viva l 'algerie
anonymous
anonymous
sketch #1477 123 viva l 'algerie

view like
sketch #4887 Jessica Rabbit by Garima Taneja
anonymous
anonymous
sketch #4887 Jessica Rabbit by Garima Taneja

view like
sketch #389
anonymous
anonymous
sketch #389

view like
sketch #3558 Eye Rubel Parvez
anonymous
anonymous
sketch #3558 Eye Rubel Parvez

view like
sketch #4358 Wink Károly Benkő
anonymous
anonymous
sketch #4358 Wink Károly Benkő

view like
sketch #5272
anonymous
anonymous
sketch #5272

view like
sketch #4974 Eminem by Juan Garcia
anonymous
anonymous
sketch #4974 Eminem by Juan Garcia

view like
sketch #5072
anonymous
anonymous
sketch #5072

tomski对某地区新引入一种鸟的种群增长率1 7年的调查研究得到的数据如下表下列对该鸟种群描述正确的是年份 第1年 coloring
view template
对某地区新引入一种鸟的种群增长率1 7年的调查研究得到的数据如下表下列对该鸟种群描述正确的是年份 第1年 第2年 第3年 第4年 第5年 sketch template
view template
对某地区新引入一种鸟的种群增长率1 7年的调查研究得到的数据如下表下列对该鸟种群描述正确的是年份 第1年 第2年 第3年 第4年 第5年 sketch template
view template
对于某地区新引入的一种鸟类进行种群调查研究资料如下 年份 1970 1971 1972 1973 1974 1975 种群数量只 50 sketch template
view template
气候变化对鸟类存活影响的研究获新进展—新闻—学 sketch template
view template
某研究所对一个河流生态系统引入的某种鱼类进行了几年的跟踪调查．得到以下两图甲图表示几年来该鱼的出生率和死亡率变化乙图表示迁入此生态系统后该 sketch template
view template
在辽宁西部某地区的“三北防护林 单一种植的是樟子松一段时间松毛虫肆虐使这一地区的防护林几乎成了不毛之地这个事实最能说明A．樟子松本身 sketch template
view template
种群增长型 智汇三农 sketch template
view template
为了减小某一种害虫对农作物的危害而引入了专门捕食这种害虫的蜘蛛．如图所示引入蜘蛛后对这两个种群数量变化的调查结果下列对该图的解释中正确的是 sketch template
view template
为了减小一种昆虫对农作物的危害人们引入了专门捕食这种昆虫的蜘蛛右图示引入蜘蛛后对这两个种群数量变化的调查结果下列对曲线图的解释中正确的 sketch template
view template
入侵物种会对当地群落结构和生物多样性产生灾难性影响．某课外探究小组的同学对某一块荒地的某种外来入侵植物和几种本地植物的种群密度进行了连续五年 sketch template
view template
题目对某地区新引入一种鸟的种群增长率增长率＝出生率 死亡率1 7年的调查研究得到的数据如下表下列对该鸟种群描述正确的是 年份 sketch template
view template
下图表示某物种迁移到一个新环境后其种群数量的变化情况 1从曲线的走势来看该种群刚迁入时经历了一个快速的增长时期曲线现出似 的 sketch template
view template
据图回答以下有关生态学问题．I．某地区曾做过一项实验将大最的鸭子引入农田水稻蝗虫对蝗虫进行了有效控制．为研究蝗虫种群数量变化规律该实验还 sketch template
view template
研究所对一条河流生态系统进行了几年的跟踪调查现某种鱼迁入此生态系统后的种群数量增长率随时间的变化现如下图所示曲线则在t1时该种群的年龄 sketch template
view template
下列各项中对实现池塘中某种鱼类的可持续利用最有意义的是 A．池塘中该种鱼的总数 B．调查该种鱼类的所有生态因素 C．调查该种鱼类 sketch template
view template
为了减某种昆虫对农作物的危害人们引入了专门捕食这种昆虫的蜘蛛下图表示对这两个种群数量变化的调查结果下列解释正确的是 A在Ⅰ时期若 sketch template
view template
研人对某草原一种野生动物的种群进行研究得出了与种群密度相关的出生率和死亡率的变化如图所示有关叙述正确的是 A．该生物的种群增长曲线 sketch template
view template
下图为某自然环境中生物种群数量的变化曲线下列有关叙述中错误的是 A．ab种群加速增长K∕2时增长最快B．de波动的直接原因是出生率 sketch template
view template
对种群增长率与增长量、增长速度的辨析 Word文档免费下载 文档大全 sketch template
view template
题目为除去农作物的某种害虫而引入天敌蜘蛛后一定时间后对两个种群进行调查得出如图所示的结果图中两条曲线分别表示它们的数量变化．有关 sketch template
view template
下图表示某物种迁移到一个新环境后其种群数量的变化情况 1从曲线的走势来看该种群刚迁入时经历了一个快速的增长时期曲线现出似 的 sketch template
view template
下图甲为种群的年龄结构图图乙是某一动物种群迁入一个适宜环境后的增长曲线图请据图回答 1A型的年龄结构特征是 2图甲中B表示 sketch template
view template
15．图中种群在理想环境中“J 型曲线增长在有环境阻力条件下“S 型曲线增长下列有关种群增长曲线的叙述正确的是 A．环境阻力对种群增长 sketch template
view template
学家对某地区新引入的一种鸟类进行种群调查所得数据如下 年份197019711972197319741975种群数量只5080 捕捉 sketch template
view template
种群增长的数学模型有曲线图和数学方程式．下列关于种群的“J 型曲线增长的叙述错误的是 A可表示为t年后种群数量为Nt=N0λtB sketch template
view template
题目如图表示某草原中某一种群的随时间变化的曲线下列相叙述正确的是 A通过对曲线分析可知在5年后该种群数量开始下降B030年间在 sketch template
view template
140．同一物种或不同物种的种群成之间为了获得共同需要而又供应有限的资源的互相关系 ——青夏教育精英家教—— sketch template
view template
研人对某生物进行研究得出了与种群密度相关的出生率和死亡率的变化如图所示请据图判断下列说法中不正确的是A．农业生产上在D点时进行捕捞 sketch template
view template
2009年第6题右图曲线ab表示两类生物种群密度与存活率之间的关系下列分析错误的是 A曲线a代表的种群个体一般体型较大营养级较高 B sketch template
view template
某校生物研究性学习小组在对某森林生态系统进行调查后现除有木杂草外还有食草昆虫兔狼等动物请根据所学知识分析回答1研究小组要 sketch template
view template
在生态学中生物种群的年龄结构有两个层次即个体的年龄组成和组成个体的构件年龄组成个体的构件年龄是单体生物所没有的例如一年生苔草的分枝 sketch template
view template
研人对某草原一种野生动物的种群进行研究得出了与种群密度相关的出生率和死亡率的变化如图所示有关叙述正确的是 A该生物的种群增长 sketch template
view template
在种群的下列特征中对种群个体数量的变化起决定作用的因素是 A．种群密度 B．年龄组成 C．性别比例 D．出生率和死亡率——青夏教育精英家教—— sketch template
view template
下图为某自然环境中生物种群数量的变化曲线下列有关叙述中错误的是 A．ab种群加速增长K∕2时增长最快B．de波动的直接原因是出生率 sketch template
view template
种群的年龄组成大致可分为如图所示的三种类型请据图回答下列问题 1图中C类型是 型种群的年龄组成因为 2国在50 60年代出现 sketch template