Friday, March 19, 2010

Activity 72: A Miracle Fish?

Today students started Unit E: Ecology. The first activity was a reading the discussed how an introduced species can effect an ecosystem. The topic of the reading was how the Nile Perch were introduced into Lake Victoria in Africa. The Nile Perch eventually caused 200 different species of fish to go extinct and to allow algae to overtake the lake. On a positive note, the Nile Perch gave a food source to the villagers as well as an income source. The students had to discuss the trade-offs of the introduction of the Nile Perch and predict what may happen in the future to Lake Victoria.

Homework: Finish analysis questions in page E-9: #'s 1, 2, 4, 5, and 7.

Hint of the day: Let the snow fall :)

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