A second, more likely, explanation is that the extremely dry climate of ancient Egypt was largely responsible, given that dryness promotes the preservation of organicremains generally.
第二种，更有可能的解释是，古埃及极端干燥的气候是主要原因，因为干燥促进了有机遗骸的保存。
2
Azoic rocks don't contain organicremains.
无生代岩石中不包含有机残余物。
3
They are thought to have formed over many centuries as the accumulated product of organicremains left by native settlements.