The first two firms have the same per-megawatt cost of production equal to $2, while firm C has a per-megawatt cost of $1. Alligators and Hydrology Water depths and durations in the Everglades have been transformed by drainage and impoundment. d. Aquatic vegetation e. Insects c. herbivore d. Carnivore, they help to recycle nutrients back into the soil, Why are fungi and bacteria important in a food chain or food web? 14. Although these animals become easy prey for alligators and other predators such as wading birds, the value of the refuge outweighs the risk. Some may weigh up to 85 pounds (38.5 kilograms); however, most weigh less than 50 pounds (23 kilograms). a. Grass b. Insects c. rats This project is the culmination of 13 years of study on the nesting success of alligators in Everglades National Park. Alligators to the Florida Ecosystem Education and awareness is the best long-term way to avoid future incidents. When the fox dies, bacteria break down its body, returning it to the soil where it provides nutrients for plants like grass. The eyelids of the Chinese alligator have a bony plate that is missing in the American alligator. The American Alligator: An Indicator Species for d. Nuclear power plants, Algae receive energy directly from the sun which makes them which of the following? (5.4) (5.4) hb```a``* @(an0X[m4?E ?B>);j6sfyV D@ U( Fish b. Spiders c.zooplankton WebIf alligators are removed from their native ecosystem, it would affect countless other species. It, A: Environmental issues have to be addressed through public intervention even if it is taking place in, A: The tragedy of the commons situation in economics can be understood when the individuals neglect the, A: F1=250(x1)-4(x1)2wherexiisthenumberofboatsfishingthere. Which 2 of the following statements are true concerning energy flow in an ecosystem? d.They will move to deeper waters for a more stable habitat, the inorganic nutrients would no longer be available to the producers, The diagram shows the cycling of energy and nutrients in an ecosystem. By digging holes and leaving trails throughout marshes, they create habitats for fish and marine invertebrates. An organism that eats a secondary consumer. Sitting at the top of the food chain, alligators are apex predators and help keep other animal populations in balance. The food chain will be disrupted if the grasshopper is removed and the ecosystem will become very unstable. Increased surveillance at the airports, A: Natural resource economics is concerned with the supply, demand, and allocation of natural resources, A: Natural resources are those resources that are provided by nature and humans use it directly or by, A: When the anti-theft device is installed, there occurs positive externalities, which means that other, A: Illegal fishing activities are not recorded in economic activities by the government statistics. Do you have pictures of Gracie Thompson from the movie Gracie's choice. (5.4) C) The element is more readily oxidized than most other elements. Feeding activity is governed by water temperature, and foraging ceases if the temperature drops below 68 to 73 degrees Fahrenheit. c. Marginal private costs are above marginal social costs a.The inorganic nutrients would no longer be available to the producers Local journalists work hard to keep you informed about the things you care about, and you can support them by subscribing to yourlocal news organization. Anyone who encounters one and believes it may pose a threat, should contact the Florida Fish and Wildlife Conservation Commission. (5.4) What might happen to alligators in the south if the U.S. a. b. What would best explain why the mouse population is also experiencing a population decline? The highly efficient predators are quick on land and even faster in water. 1 This document is subject to copyright. a. tertiary consumer. Market equilibrium level of output: a. d.The energy in inorganic nutrients would be transferred directly to consumers, Which organisms in this energy pyramid represents a producer? benefit to consumer = area between, A: Answer: What would happen Amphibians are good indicators of significant environmental changes. Density-independent factor. This audio file of an American alligator bellowing was recorded at Shark Valley on August 24, 2008. 109 Make a donation to the Smithsonian's National Zoo and Conservation Biology Institute today! As a result, the marine mammal population also decreases. What might happen to alligators in WebIf alligators became endangered it would negatively impact our delicately balanced Florida ecosystem. (5.4) a. Bellowing occurs among males and females during the breeding season. Your email address is used only to let the recipient know who sent the email. 111 You can induce a gator's gag reflex by jamming objects in the back of its mouth, and when it tries to reposition prey in its mouth, that's your chance to escape. What would happen if alligators were removed from the ecosystem As alligators disappeared from the food chain, being at the highest trophic level, there would be a population increase in their prey such as fish, birds, amphibians, and other animals. b.An ecosystem with 50 black rat snakes will feed 1000 squirrels The food chain will be disrupted if the grasshopper is removed They like to eat many kinds of game fish. Who makes the plaid blue coat Jesse stone wears in Sea Change? "The animals have nowhere else to go. d. Marginal external costs are zero. Use this form if you have come across a typo, inaccuracy or would like to send an edit request for the content on this page. The American alligator is a freshwater species, while the American crocodile can thrive in both freshwater and saltwater habitats. What would be the total cost of reducing pollution, if the firms are allowed to trade permits between each other? Suppose firms are not held accountable for the pollution they produce. 10,000 Rather, Florida's population growth and demand for waterfront properties may be the cause for increased sightings. This means they do not internally regulate their body temperature. Evaluate the work, in kJ/kg. a.They will adapt their diet to include large fish, squid, and octopus Of course, many different animals eat grass, and rabbits can eat other plants besides grass. a.Fewer salmon will allow bears to the thrive and produce more offspring Marshlands, ponds, lakes, reservoirs, river backwater canals, rice paddies and irrigation networks provide suitable habitat. Instinctive behavioir. 123 0 obj <>/Filter/FlateDecode/ID[<93E991B1199D6F4E9357DDCAA54428F6><343B39741742DF4D8DDE3981286D7CE2>]/Index[106 39]/Info 105 0 R/Length 92/Prev 132464/Root 107 0 R/Size 145/Type/XRef/W[1 3 1]>>stream d.The number of organisms decreases with each trophic level, but the amount of energy in each trophic level increases Over consumption, which could lead to extinction. a. Decomposers b. The juveniles aggregate in pods that may include hatchlings from other nests and remain close to the mother typically as long as one year, but sometimes for two or even three years. If the oyster population was reduced, what would you expect to happen to the quantity of microbes, floating algae and detritus? c.An increase in the population of primary consumers WebAmerican alligators were once threatened by extinction, but after being placed on the endangered species list in 1967, their population increased. Fish and Wildlife Service were to reduce or eliminate the tags required to hunt alligators? Their populations should go up because nothing else, except birds, eats them. What will most likely happen to the florida manatee if pollution kills sea grasses and aquatic vegetation? c.Their diet will change to include fish and small crustaceans (5.4) Does this provide a good incentive for low-cost production as compared with fishing in the open seas where there are few if any property rights? (5.4) This will reduce the nutrient availability to the producers and subsequently, to the consumers. What would happen (5.4) 6,000 SmithsoniansNationalZoo& ConservationBiologyInstitute long run and To attack their prey, alligators disguise themselves by staying in the water with only their eyes peeping above the surface. What would happen if the American alligator went extinct? Question 4 30 seconds Q. 8) If the oyster population was reduced what would you expect to happen to the quantity of (5.4) a.Grasshopper b. At the Smithsonian's National Zoo, Chinese alligators are fed small rats, mice and fish. Eggs that incubate at temperatures ranging from 90 to 93 degrees Fahrenheit hatch as males, while those that incubate from 82 to 86 degrees hatch as females. Zone2hasfewerfishpermile, A: .Externality is a situation when the consumption/production of a good/service affects people around, A: Tragedy of the commons:- It is an economic problem that occurs when individual only think about his, A: The marginal cost of emissions is the extra environmental impact incurred as a consequence of, A: The externality would result in the effect of another party on another party's production of good or, A: sd1 is long run domestic supply curve Global, A: The economics as a study is based upon the idea that the economies around the globe tend to witness, A: The villagers will make the decisions based on the C-B analysis Similar to the ecosystem effects of Aldabra tortoises, these extinct tortoises modified the landscape through heavy grazing and soil disturbance (terraforming) but also through seed dispersal of endangered plants (Hansen et al. This species digs extensiveearthen tunnels with multiple chambers, entrances and pools. It is one of the state's most ecologically important and often misunderstood predators. Which organisms most directly provide inorganic nutrients for the producers to use? Which organism would you expect to find the fewest in number in the ecosystem? a. Webproducer/autotroph. e. Aquatic vegetation f. Water snakes, A fungal infection can kill amphibians such as frogs. c.Available energy remains the same even though biomass decreases at each trophic level (5.4) They remove extra water from the soil. The price the villager gets for the 2-year-old llama depends on the quality of the fleece it grows while grazing on the commons.