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Why don't ants drown in heavy rain storms?
| 凑个热闹，那俺就谷歌一把。还没找到为什么会搬家，却找到了下面的一种说法：Why don't ants drown in heavy rain storms?
It can pour for two or three days and you go out after it stops and there they are with their little hills all cleared away and ready to annoy someone.
Usually the construction of the anthill itself allows water to drain very rapidly. Most anthills are filled with tunnels that drain the water from the hill. There are even ants, like fire ants, that have a central hill that is covered with a hard covering of soil and their entrances and exits are several feet from the central mound. Rain water runs off of the hard covering like it does off of a roof of a house. But if the hill is flooded, some ants will drown but most will cling to sticks or leaves or to each other and float on the floodwater. Ants also move their brood or immature forms away from the water. Sometimes after a rain, ants will have to re-excavate their nest because the wet soil collapses and closes the tunnels. As always, insects are very resourceful when it comes to survival.
Source(s):
http://www.discover.com/ask-discover?qid=75
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狗仔卡
发表于 2006-12-30 17:02:11
楼主