After collecting data on the abundances of a crayfish species (Cambarus latimanus), a snail species (Elimia clenchi), algae, and temperature in 20 streams of the Troy area, you observe: Average snail size is positively related to water temperature Snails are large in streams with abundant crayfish. Snails are small in streams with few crayfish Snails on average are larger in streams with little algae and snails are smaller on average in streams with abundant algae. 1. Describe how you would go about measuring snail abundance in each stream. 2. Provide a testable hypothesis to explain variation in snail shell size based on one, some, or all the above observations. 3. Describe a prediction based on this hypothesis. 4. Describe an experiment to test your prediction, making sure to identify your experimental unit. treatments, and response variable. After collecting data on the abundances of a crayfish species (Cambarus latimanus), a snail species (Elimia clenchi), algae, and temperature in 20 streams of the Troy area, you observe: Average snail size is positively related to water temperature Snails are large in streams with abundant crayfish. Snails are small in streams with few crayfish Snails on average are larger in streams with little algae and snails are smaller on average in streams with abundant algae. 1. Describe how you would go about measuring snail abundance in each stream. 2. Provide a testable hypothesis to explain variation in snail shell size based on one, some, or all the above observations. 3. Describe a prediction based on this hypothesis. 4. Describe an experiment to test your prediction, making sure to identify your experimental unit. treatments, and response variable