该网页提供众多关于发育生物学研究的资源链接，包括动态发育，蝾螈种群，果蝇的遗传和分子数据，小鼠胚胎以及癌症基因组等等。
It provides numerous links to developmental biology research resources, including dynamic development, axolotl colony, genetic and molecular data for drosophila, mouse embryo and cancer genome etc.
例如，可能另一类物种的数量在不断上升，它们以蝾螈及它们的卵作为捕食对象，从而导致其种群数量下降。
For example, it is possible that another species that preys on the salamanders or its eggs has increased, therefore leading to the decline in its population.
同时，科学家们发现，一种在山间湖泊里产卵的物种——蝾螈——的种群数量已出现减少。
At the same time, scientists have discovered, the population of a species of salamander that lays its eggs in mountain lakes has declined.
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