苏教版科学 2.动物怎样繁殖后代 教案
教学内容分析及学情分析:本课内容的安排是根据动物繁殖行为的基接优取损本似年清若副本过程:雌雄识别、交配、生产、哺育后代来设计的,同时也穿插了一些动物独特繁殖方式可参十之苏位验动的...
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非洲慈鲷和斑马鱼是一种鱼吗
非洲慈鯛:在中南360问答美洲、非洲和亚洲的一部分均可以发现慈鲷科的踪迹。在非洲,它们分布于整个非洲**板块,除了极西部和南部的区域外,在马达加斯加岛也同样发王善席酒该现过数个品...
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红箭鱼喜来自欢什么鱼食?
这种鱼不择食,动物性饵料和植物性饵料均能适应,平时可投喂轮为帝标放客虫、桡足类、丝蚯推命属曾不造前身李著花蚓等动物性饵料,也可军题十冲角重正斯岁建间隔一定时间投放切碎的菠菜叶或莴...
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怎么分辨小鸟的性别?
小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,其方法为。1、观看头型:雄鸟头型为背儿头、头尖、并且头稍小。雌鸟头型...
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淡蓝色的虎皮鹦鹉是公是母
虎皮牡丹鹦鹉小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,360问答其方法为:1、观看头型:雄鸟头型为背儿头、头尖...
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灰椋鸟怎么分公母,如何养好
牡丹鹦鹉小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,其方法为。1、观看头型:雄鸟头型为背儿头、头尖、并且头稍小。...
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马六鸟公母如何分
虎皮牡丹鹦鹉小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,其方法为:1、观看头型:雄鸟头型为背王儿头、头尖、并且头...
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怎样留及么许笑辨别鸟的雌雄
小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则360问答不易辨别。真正好辨别雌雄是怕装4、5个月以后,这时雌雄较好笔伤土顶书少鉴别,其方法为。1、观看头型:雄鸟头型为背儿头、...
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怎么看鸟的性别?怎么看鸟的年龄?型浓呀落乐
小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,其方法为。1、观看头型:雄鸟头型为背儿头、头尖、并且头稍坐举料于小。...
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黑梅鸟怎么认公母来自?
小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别360问答,其方法有以下几点:1、观看头型:雄鸟头型为背儿头、头尖、并...
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分辨雌雄鸟儿的窍门是什么?
小鸟区别来自雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,其方法为。1、观看头型:雄鸟头型为背儿头、头尖、并且头稍小。雌鸟...
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窝脸儿鸟雌雄鉴别
小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,其方法有以下几点:1、观看头型:雄鸟头型为背儿头、头尖、并且头稍小。...
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黑白鸟公母区分图?
小鸟区别雌雄非常困难,除非养鸟经验非常丰富者,否则不易辨别。真正好辨别雌雄是4、5个月以后,这时雌雄较好鉴别,其方法有以下几点:1、观看头型:雄鸟头型为背儿头、头尖、并且头稍小。...
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