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Because cane toad toadlets (see Project 14) are initially quite small (9-13 mm) and lack the extreme toxicity of other life stages, they are quite vulner-able to predation. Metamorphs grow very rapidly at first (0.647 mm/da; Zug and Zug 1979), but the rate of growth is density dependent. The earliest metamorphs are generally found within 1 m of the water (Cohen and Alford 1993). Survival is influenced by desiccation and predation, varying from 1.2% to 17.6% (Lampo and De Leo 1998). Susceptibility to desiccation is reduced with increased numbers of retreat sites available to the toadlets. Develop an individual-based simulation of toadlets near a pond that in-cludes a moisture grid and predators and that does not allow the toadlets mi-grate off the grid. Attempt to adjust parameters so that survival is as indicated. Running the simulation a number of times, determine the percent that survive and the mean toadlet size at the end of 1 year. Indicate your assumptions and discuss your results.
suppose that a gambler plays a $1 game 7 times. in each game, his probability of winning is 20 percent. if he wins, he gets $4 prize. he gets nothing if he loses. to profit on the games, he must win at least twice. what is his probability of winni..
For each event, you must specify how it effects either demand, quantity demanded, supply, or quantity demanded. It is also important to demonstrate how the change will affect the market demand or supply curve.
The element being searched for is not in an array of 100 elements.
The St. Louis Federal Reserve bank at www.research.stlouisfed.org/fred2 provides data on both real GDP (chained 2000 dollars) and real potential GDP for the United States. To get the data, first click on Gross Domestic Product (GDP) and Components..
If the city wishes to raise as much revenue as possible from the tolls, where will the city decide to charge a toll: in the inelastic portion of the demand curve, the elastic portion of the demand curve, or the unit elastic portion? Explain.
Use graphs to show the likely outcome of such barriers to exports on the price and quantity of water used in Canada and in the United States if markets for water are competitive. Show the effects on consumer and producer surplus in both countries.
A family wants to start an education account in 2010 (1st payment at year end 2010) by making equal annual payments in constant 2010 dollars until the time of the last tuition payment. Calculate the equal annual constant 2010 dollar payment.
Why are expectations concerning changes in the exchange rate important? How do relative rates of inflation affect those expectations?
Will revenues increase or decrease in the short and long runs?
What is the effect of a $1 specific tax on equilibrium price and quantity if demand is perfectly inelastic? What is the incidence on consumers? Explain.
the percentage undervaluation or overvaluation in the Big Mac, based on exchange rates in July 2009. Suppose purchasing power parity holds and in the long run, so that these deviations would be expected to disappear. Suppose the local currency pri..
People hold $400 million of bank deposits but no currency. Banks have made $380 million dollars of loans and only hold enough reserves to satisfy reserve requirements. Because of uncertainty, banks choose to hold $10 million more in reserves.
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