Discover the mysterious, magnificent octopus!
Follow a goggle-eyed octopus as she jets through the shadows, tentacles flying behind her. Finally she finds a well-hidden den in which to lay her eggs, which will dangle from the roof like grapes on a string. In silky verse, Karen Wallace explores the mysterious world of the octopus, while Mike Bostock’s flowing illustrations bring that world vividly to life. Back matter includes an afterword, resources for further information, a glossary, and an index.
... 亚马孙河流域可能形成雨云的湿空气,这自然导致了降水变少;二是来自南极的寒流并不会形成降水,即使产生了很多的雾和云,但对降水作用极小。安第斯山脉但即使在这样干旱的环境下,依然有100多万人存活在阿塔卡玛沙漠。没有水,他们就会制作一张张稠密网幕, ...
This program presents science concepts in areas of biology, earth science, chemistry, and physical science in a logical, easy-to-follow design that challenges without overwhelming. This flexible program consists of 12...
水下植物有数千种之多,主要以藻类为主。海藻一般可分为两类:一类是营浮游生活的浮游藻类;一类是底栖藻类。海藻种类繁多,常见的海藻有绿藻、红藻和褐藻等,此外,还有一类巨藻,高者可达百米以上,是不折不扣的“藻中之王”。此外,海藻在浅水中常密生成片。
_帆_的《基于生_文明_角的人口城市化_程研究》意在生_文明思想指_下_人口城市化_程_行理_研究,并分析中_人口城市化_程的演_、特征、影_等__。本__容_人口城市化理__行拓展,提出了人口城市化_程具有特定的_构,_深入理解__中的人口城市化提供_全面_角的理_支_,具有一定理_价值。
本书中,凡是青少年感兴趣的一切自然和社会奥秘几乎无所不有,无所不容。真正做到了庞而不杂,广而不糙。
历史上,我国曾将玉门关、阳关以西,葱岭(今帕米尔高原)以东,巴尔喀什湖东、南以及新疆的广大地区称之为西域。西域远离海岸线,气候干燥,到处是一望无际的沙漠和戈壁。正因为如此,当人们一旦提到西域的时候就会想到漫天的黄沙与呼啸的寒风。
The Biomes of the World series is an introduction to the ecosystems, or ecological communities, that make up the Earth. Each book in this eight-volume series presents clear, scientific information...
Animals. American History. Earth Science. Geography. Health. Space. True Books covers all this and more in photo-filled chapter books that provide a basic introduction to curriculum-relevant topics. Ideal for today's...
本书共分为七章,主要内容包括:土地从哪里来?了解土地的分布、矛盾的土地现状、你知道土地特征吗?土地与我们息息相关、上帝遗落的调色板、一丘黄土遍天下、紫色土与褐土、棕土与灰色森林土等。
A topical and practical introduction to life in a variety of environments around the world.The World Book Ecology series looks at the interaction of animals, plants, and people through beautiful...