Lab: Environmental Changes in a Watershed

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In the lab activity, I used a virtual watershed to demonstrate how pollutants enter and flow through the watershed. I constructed food chains to show how biotic factors are related. I also predicted and modeled how human activity affected the biotic factors in an ecosystem. Based on my observations, I can conclude that biotic and abiotic factors are closely linked and that human activity that changes the environment, like pollution, can affect all the other parts of an ecosystem in a negative way.

Explanation:

To examine how environmental changes affect the health of a watershed and to predict the effect of human activity on the watershed

Time Approximately 60 minutes

Question How do environmental changes affect both living and nonliving things in a watershed?

Summary In this lab, you will study a virtual model of a watershed to see how point and nonpoint source pollution affect the watershed. Next, you will create food chains. Finally, you will model scenarios of environmental changes and observe the effect of these environmental changes on a food chain you created. This will help you understand how the overall health of a watershed is affected by changes in environmental factors, such as populations of organisms, water quality and flow, and human activity

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in 1859, brown and 21 of his followers attacked and occupied the federal arsenal in harper's ferry. their goal was to capture supplies and use them to arm a slave rebellion. brown was captured during the raid and later hanged, but not before becoming an anti-slavery icon. abolitionist and insurrectionist

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