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Speleology

Speleology (also spelled spelæology or spelaeology) is the scientific study of caves and other karst features, their make-up, structure, physical properties, history, life forms, and the processes by which they form (speleogenesis) and change over time (speleomorphology). The term speleology is also sometimes applied to the recreational activity of exploring caves, but this is more properly known as caving, spelunking or potholing. Speleology and caving are often connected, as the physical skills required for in situ study are the same. Speleology is a cross-disciplinary field that combines the knowledge of chemistry, biology, geology, physics, meteorology and cartography to develop portraits of caves as complex, evolving systems.

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生成時間

Fishery; Marine fishery

在國家的標準準則的情況下,生成時間是時間的生產用於設置最大允許重建時間段的繁衍後代-主動雌性後代的女性所需的措施。

特有現象

Fishery; Marine fishery

或有關本地物種或限制及其分佈的一個獨特的環境因素因高度限制條件下發生的人口。

總的福利

Fishery; Marine fishery

消費者剩餘和生產者剩餘的總和。

海洋系統

Fishery; Marine fishery

這些水域遼闊的海洋,在架子上以外地區打破在深處一般大於 200 米,延伸到最大的海洋深處。主大陸的影響,從中刪除這些水域和海底交互與水列很少或根本沒有。 ...

透光層

Fishery; Marine fishery

表面層發生光合作用足夠光的地方。

死亡率

Fishery; Marine fishery

魚類死亡率的措施。死亡發生在所有生命階段的人口,往往會隨著年齡下降。死亡可能是由於幾個因素等污染,饑餓,疾病而死亡的主要來源是捕食 (在未開發的股票) 和 (在被剝削的) ...

齒秘書

Professional careers; Occupational titles

專業人士,選擇用來做牙板的假牙。Respnsibilities 包括: *選擇指定的顏色,並根據下巴的形狀的牙齒。 *匹配牙帶齒的模具由籌備到程式集的牙科實驗室技術員假牙的牙醫。 ...

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