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Aquatics CDE Test Bank - Pa FFA

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41. The preferred water temperature that separates coldwater and warm water speciesis:A. 60 degreesB. 70 degreesC. 80 degreesD. None of the above42. The milk snake got its name for what reason?A. Its milky white appearanceB. it was thought to have milked cowsC. It spits out a milky white colored saliva when frightenedD. None of the above43. What powers the hydrologic cycle?A. HumansB. DamsC. SunlightD. Gravity44. Pesticide contamination of groundwater can be prevented by:A. Reading and following label directionsB. Making sure application equipment is in good working orderC. Avoid mixing pesticides near sources of waterD. All of the above45. Which aquatic insect is affected most severely by acid precipitation?A. MayflyB. Black FlyC. Water striderD. Mosquito46. Which group of fish is found at the top of the food chain?A. HerbaceousB. PredaciousC. InsectivorousD. None of the above47. Acid rain affects stream quality by:A. Raising the pHB. Lowering the pHC. Raising the temperatureD. Lowering the temperature

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