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Long answer (essay) questions (8 points): Why it is important to monitor the natural environment over long periods of time? During this class, we observed scientists associated with multiple agencies conducting long-term monitoring. Discuss two environmental/biological characteristics that are being monitored regularly (we discussed at least three) and why these metrics were chosen. 

Answer the following with a word, words, or phrase, as appropriate. Complete sentences are not necessary (2 points): There may be more than one answer, but you must pick the best ONE! What is a major anthropogenic threat to fish acoustic communication?

Short answer (4 points): What is an ecotone?

Short answer (4 points): What are two species found only in the Suwannee River drainage (2 points each)?

Short answer (4 points): What is one imperiled freshwater organism that we observed in this class (2 points)?  What are two major threats to this organism (1 points each)?

Short answer (4 points): What is a living shoreline (2 points) and why would it be favored over an armored shoreline?  Give two reasons it would be preferred (1 point each).

Answer the following with a word, words, or phrase, as appropriate. Complete sentences are not necessary (2 points): There may be more than one answer, but you must pick the best ONE! The stable layering of water (e.g., in a lake) due to differences in water density is known as what?

Short answer (4 points): Managers often use macroinvertebrates as indicators of freshwater environmental quality. What is one benefit of this approach over directly testing for pollutants in the water (2 points)? What are two characteristics of macroinvertebrates that make them good organisms to use as indicators (1 point each)? 

Answer the following with a word, words, or phrase, as appropriate. Complete sentences are not necessary (2 points): There may be more than one answer, but you must pick the best ONE! A species that is introduced outside of its native range by human activities that may or may not cause ecological or economic harm is known as what?

[All solutions must start by writing an equation (or equations) from the equation sheet on your paper.  The solution must then follow a logical progression from the equation(s) on the equation sheet to the answer(s).] On level ground, a 60.0-kg woman pushes a 100.0-N box at an angle 20 degrees below the horizontal, causing the box to move at a constant speed of 2 m/s for 4 seconds.  The force of friction acting on the box during this time is 20 N.      a) Draw and label an FBD for the box during the time the woman is pushing the box at constant speed. Within your coordinate system, report the components of the force pointing along and perpendicular to the angled plane. [You will scan and upload this diagram right after the quiz] b) Determine the size of the force of the woman pushing on the box [Type your answer, with units, below.  Upload your supporting work right after the quiz] c) Determine the size of the normal force acting on the box [Type your answer, with units, below.  Upload your supporting work right after the quiz] d) What is the coefficient of friction between the box and the plane?