![Pbs Teachers: Alien Invasion: Estimating a Snake Population [Pdf] Activity](https://content.lessonplanet.com/knovation/original/42719-3ab379f516ca5265608d3b9539483f02.jpg?1661419221 "Pbs Teachers: Alien Invasion: Estimating a Snake Population [Pdf] Activity")
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Pbs Teachers: Alien Invasion: Estimating a Snake Population [Pdf]
Learn about the effects of alien species on native environments and explore biologists' use of capture/recapture statistics and analysis of sampling techniques by estimating the population size of a tagged species.
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Pbs Teachers: Scientific American: Alien Invasion: Unwanted Travel Partners
Perform an experiment to observe inadvertent transfer of organisms when new fish are transplanted into tropical aquariums. Apply this knowledge to explain how alien species can rapidly destroy the established ecological balance in an...
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Pbs Teachers: Scientific American: Alien Invasion: Aquarium Capers
Evaluate the effectiveness of snails as a biological control to combat the spread of an alien alga in the Mediterranean. Grow and culture algal "mats" on microscope slides to observe the grazing behavior of pond snails.