The blue crab is a keystone species in the Chesapeake Bay
As you already know, ecosystems do not stay the same forever. Natural occurrences, like natural disasters, and human disruptions, like pollution impact ecosystems across Virginia and throughout the Earth. In this topic, you will explore some of the different ways in which the balances of ecosystems are disturbed. In addition, you will learn some way that you can help protect the environment locally and globally.
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