Lab: Environmental Changes in a Watershed Answers

Where did the pollution from the acid rain and factory in the virtual lab eventually end up?airgroundwaterlakesrivers

Which of these ideas did you include in your answer? Check all that apply.

In this lab, you observed how changes in the environment can affect the health of a watershed. You saw how two types of [___] entered and flowed through the watershed. You also predicted how [___] activity affected food chains, diagrams that show how energy is passed from one biotic factor to another through the foods they eat.

Choose the correct answers from the drop-down menus.

Choose the correct answers from the drop-down menus. What are the rangers doing to restore the population of the Sierra Nevada yellow-legged frogs? If the organisms that preyed on and competed with the yellow-legged frogs were removed from the affected lakes, what would most likely happen to the population of the garter snakes?

Lake Mojave is an ancient lake that has dried up and no longer exists in the Mojave desert in California.Which environmental conditions may have occurred to cause the disappearance of the lake and the organisms that live in it? Check all that apply.decrease in rainfall in the Mojave desertdecrease in temperature in the Mojave desertdecrease in runoff that flows into Mojave lakeincrease in blocked streams that flow into Mojave lakeincrease in pollution that was deposited into Mojave lakeincrease

Which environmental change caused all populations of the biotics factors (algae, mosquito larvae, minnow, trout, and heron) to increase?increase in runoffdrought in the areapollution from the factoryintroduction of a non-native species

During the summer, when the land is brown and the grass is green, the population of mice decreases because mice are easily spotted by the organisms that eat them.How would this change affect the food web? Check all that apply.

Suppose this scenario was modeled in the lab. How would the populations of the biotic factors be affected? Check all that apply.Mosquito larvae will increase.Heron population will increase.Algae population will increase.Trout population will decrease.Minnow population will decrease.

Which factors caused the rapid decline or decrease of the Sierra Nevada yellow-legged frog population? Check all that apply.fishfunguspesticidesUV radiationpollution

How did the lab activities help you answer the lesson question: How do environmental changes affect both living and nonliving things in a watershed? What conclusions can you make based on your observations?

Choose the correct answers from the drop-down menus. What are the rangers doing to restore the population of the Sierra Nevada yellow-legged frogs? If the organisms that preyed on and competed with the yellow-legged frogs were removed from the affected lakes, what would most likely happen to the population of the garter snakes?