A Moment of Science
Contrary to popular belief, some dolphins find habitat in river waters.
River deltas are coastal valleys where rivers empty into the sea. Standing on a river delta you don't expect the ground beneath your feet to be disappearing.
The next time you visit a local pond or river, you might become disturbingly surprised if you start looking for frogs. "Frog Legs" on this Moment of Science.
Household drugs like painkillers, antibiotics and hormones enter the water system in many ways. For example, some animal feeds contain antibiotics and might flood into rivers with run-off, while other antibiotics are flushed or dumped down sinks and toilets in homes.
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