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The Effects of Run Off on Maryland Waterways

The Effects of Run Off on Maryland Waterways. Objective: Students will make qualitative observations and test gas levels in the water in order to determine the effects of manure on aquatic plants and animals.

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The Effects of Run Off on Maryland Waterways

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  1. The Effects of Run Off on Maryland Waterways Objective: Students will make qualitative observations and test gas levels in the water in order to determine the effects of manure on aquatic plants and animals.

  2. Warm UpRecord the following answers on a sheet of paper that will be used for your lab. • Write the equation for photosynthesis. • Write the equation for cellular respiration. • What gas do organisms breathe in to make energy? • What gas do plants release during photosynthesis? • How could a decrease in oxygen effect fish living in a lake?

  3. “Pre Lab”Write the following words on a piece of paper to help you with today’s lab. Aquatic plants-Plants that live in the water. Algae-photosynthetic organisms that occur in most habitats. Many lack typical plant structures such as stems and leaves. Fertilizer-nutrients that are used on plants to help them grow. Manure-animal waste that contains high levels of nitrogen (N) and phosphorous (P). Run off-when rain washes manure into lakes and streams. This provides the aquatic plants with too much N and P which will make them grow too fast.

  4. QUALITATIVE RESEARCH:Compare/contrast the low pond and the high pond. LOW POND HIGH POND

  5. Picture View of Horse Barn Compost pile (Old Manure) LOW POND New manure… horse grazing/shelter area HIGH POND

  6. QUALITATIVE RESEARCH: After seeing the bigger picture of the barn… • Which pond looks “healthier” or cleaner? • WHY do you think that the lower pond is more GREEN? • Which pond has more manure feeding into it? • Which pond do you think the horses drink out of?

  7. 5. Why do you think the lower pond has more geese living in it?

  8. QUALITATIVE RESEARCH Read the article and answer the questions on your lab paper.

  9. Investigation • Scientific question: What pond will have a higher oxygen level? The low (green) pond or the high pond? • Hypothesis: IF we test the water from the two ponds then… • Procedure:

  10. SAFETY!! DO NOT HANDLE THE POND WATER! If you are granted permission… GLOVES AND GOGGLES MUST BE WORN IF YOU ARE HANDLING THE POND SAMPLES!! WHY???

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