Lung Essays

Breathe Easy

With both a gill and a lung, apple snails are able to breathe both in and out of water. Perhaps because they carry their houses on their backs, apple snails are not exactly picky about their habitats. Most species live in stagnant, swampy waters that are rich in rotting plants and decaying organisms but poor in oxygen. In addition to the low oxygen levels, apple snails in these tropical habitats often have to contend with seasonal droughts. To cope with…

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