Researchers are trying to understand whether phosphorus limits crop productivity in wheat.  They set up plots with no doses of 0, 25, 50 75 and 100.  They then examine the change in wheat productivity (measured as yield in kg/hectare).  Their results are shown below in table and in graph form. Based on this, which of the following is accurate? (select all that apply) Phosphorus fertilizer dose yield (kg/ha-1) 0 7 25 23 50 33 75 32 100 33  

IMPORTANT! Before leaving the room today you need to check in with Dr. Prescott, Dr. Kirkpatrick, Makenna or Navroz so we can confirm that your exam submitted successfully and get your paper portion.  Thank you and have a wonderful summer!

In the Talamanca mountains of Costa Rica, dense oak forests once covered the landscape.  These oak forests, with trees growing up to 50 meters tall, are home to countless birds, epiphytes (plants growing on plants), amphibians, reptiles and insects. In the 1940s, the Pan-American highway made this area accessible to humans.  Over time, large areas of this once continuous forest were logged for timber, to produce charcoal, and to graze cattle.  Now, stretches of continuous forest exists alongside grazed areas, with patches of oak trees of varying sizes scattered across the landscape.  You are interested in this region as a test case for applying MacArthur and Wilson’s Island Biogeography Theory in a terrestrial landscape, where continuous forest is like the mainland, and patches of oak of varying sizes and distances from the continuous forest are like islands.  You plan to focus on insects and/or plant species that specialize on oak trees.  Let’s assume you can find a range of these isolated oak islands of various sizes and distances from the continuous forest.  Identify 3 principles of Island Biogeography that you could test.  For each,  A.  Briefly explain the principle. B.  Sketch a graph of the results you would expect to see, clearly labeling the X and Y axes.   Use the paper provided for this portion.  

What is the purpose of the masque performance in Act IV of The Tempest?

Who will be left on the island at the end of The Tempest?

A deep sea vent releases hydrogen sulfide and other chemicals into the water.  Microbes, such as the bacterium Arcobacter sulfidicus, use the energy from oxidizing these hydrogen sulfide molecules to power the synthesis of carbon compounds such as glucose.  Several species of vent shrimp feed on mats of A. sulfidicus bacteria.  Vent rat fish feed on these shrimp (see image below).  We will focus on just these three species, although other organisms are involved in these interactions.  Use this scenario to answer the 3 questions that follow.    

Why is the transfer efficiency you calculated between primary producers and consumers not 100%? Specifically, where does the rest of the energy go? Give and briefly explain 2 distinct possibilities.  Explicitly relate at least one of your ideas to a law of thermodynamics.  

Which of the following labs is indicative that a client’s oxygen-carrying capacity has decreased?

Why does Prospero create the storm at the beginning of the play?

Bonus 2 (worth up to 2 points): What was the most interesting thing you learned this term?  Your answer needs to be 3-4 sentences to get full credit.