想象一下，一片无边无际的蓝色深渊中，如同天降的雪花，一片片神秘的有机物质缓缓飘落，这就是深海中的独特现象——海洋雪。它并非真正的雪花，而是由生命与死亡的交织编织而成的生态链的纽带。生命之源：海洋雪的构成与生态意义 海洋雪的主体由死去或即将死亡的浮游生物、硅藻、原生生物，以及细菌、...
海洋雪可在密度跃层停留数天，直到扩散作用让其密度增大到足以继续下沉[1]。
在浩瀚的蓝色深渊中，一种神秘的物质如同雪花般缓缓落下，这就是海洋雪。它并非由冰冷的冰晶构成，而是由一系列复杂的有机碎屑、微生物和生物分泌物交织而成的混合物。这些成分包括了浮游生物的枯萎遗体，如微小的藻类、动物的排泄物、食物残渣、脱落的鳞片，甚至是捕食者遗留的碎肉。还有那被微小病毒附着...
海洋雪可在密度跃层停留数天，直到扩散作用让其密度增大到足以继续下沉[1]。
What are the different types of land environments? Describe the climate of each biome. What are some characteristics of forest biomes? What is a biome? Explain why there are three major types of each of the major biomes (deserts, grasslands, and forests). Explain why biomes are not uniform...
海洋雪，一种在深海中由有机物组成的碎屑，像雪花一样不断飘落，是深海生态系统的基础。深海生物严重依赖海洋雪作为能量来源。海洋雪的组成包括已死或将死的动植物（如浮游生物、原生生物）、细菌、粪便颗粒、泥沙和尘土等。这些物质随时间推移，形成直径可达几厘米的聚集体，需要几周时间才能飘到海底。然...
What are the different types of pollution? What is dust made of? What is aquatic pollution? What is subsidence in meteorology? What is thermal pollution? What are marine debris? What are the types of thermal pollution? What is nonpoint source pollution?
Barges are of many types, depending on service, configuration, size, and propulsion. Hopper barges are primarily used for dredging support or transporting goods like coal, steel, cement, earth, gravel, stone chips, iron ores, sludge, mud, and waste products recovered from the sea or river bed...
What is the animal you would like to see in the wild? 你在野外想要见到什么动物? If I had the opportunity, I would love to see a snow leopard in the wild. These elusive and magnificent creatures inhabit the high-altitude mountains of Central Asia and are known for their beauty and adapta...
Particulate "snow" is a common feature of marine and fresh waters. Formed by both biological and physical processes, it is a short-lived home for pelagic and substrate-adapted organisms. Snow communities are often dense, serving as important foraging centers for small consumers. The particle ...