CAMPBELL BIOLOGY CUSTOM W/MASTERING
5th Edition
ISBN: 9781323764534
Author: Reece
Publisher: PEARSON C
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Chapter 55.3, Problem 3CC
WHAT IF? Ø Detritivores are consumers that obtain their energy from detritus. How many joules of energy are potentially available to detritivores in the ecosystem represented in Figure 55.10?
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Chapter 55 Solutions
CAMPBELL BIOLOGY CUSTOM W/MASTERING
Ch. 55.1 - Why is the transfer of energy in an ecosystem...Ch. 55.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 55.1 - MAKE CONNECTIONS Use the second law of...Ch. 55.2 - Why is only a small portion of the solar energy...Ch. 55.2 - How can ecologists experimentally determine the...Ch. 55.2 - Prob. 3CCCh. 55.2 - MAKE CONNECTIONS Explain how nitrogen and...Ch. 55.3 - If an insect that eats plant seeds containing 100...Ch. 55.3 - Prob. 2CCCh. 55.3 - WHAT IF? Detritivores are consumers that obtain...
Ch. 55.4 - DRAW IT For each of the four biogeochemical...Ch. 55.4 - Why does deforestation of a watershed increase the...Ch. 55.4 - WHAT IF? Why is nutrient availability in a...Ch. 55.5 - Prob. 1CCCh. 55.5 - WHAT IF? In what way is the Kissimmee River...Ch. 55 - Considering the second law of thermodynamics,...Ch. 55 - Prob. 55.2CRCh. 55 - Why would runners hove a lower production...Ch. 55 - If decomposers usually grow faster and decompose...Ch. 55 - In preparing a site for surface mining and later...Ch. 55 - Which of the following organisms is incorrectly...Ch. 55 - Prob. 2TYUCh. 55 - The discipline that applies ecological principles...Ch. 55 - Level 2: Application/Analysis 4. Nitrifying...Ch. 55 - Which of the following has the greatest effect on...Ch. 55 - Prob. 6TYUCh. 55 - Which of the following would be considered an...Ch. 55 - Prob. 8TYUCh. 55 - Level 3: Synthesis/Evaluation 9. DRAW IT (a) Draw...Ch. 55 - Prob. 10TYUCh. 55 - Prob. 11TYUCh. 55 - WRITE ABOUT A THEME: ENERGY AND MATTER...Ch. 55 - Prob. 13TYU
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- If 20J of energy is trapped at producer level the how much energy will be available to the last animal as food in food chain?arrow_forwardQuestiion: A given ecosystem has the following amounts of energy available at each trophic level: Primary producers: 3,000 gC/m2/day; Primary consumers: 450 gC/m2/day; Secondary consumers: 45 gC/m2/day; Tertiary consumers: 2.25 gC/m2/day. Does this ecosystem follow Lindeman’s Law for ecological efficiency? A- No, the average efficiency is 20% B- Yes, the average efficiency is 20% C- Yes, the average efficiency is 10% D- No, the average efficiency is 10%arrow_forward-Assume that humans are the second-level carnivores and that each energy unit in their level represents 25 people. How many people can be supported in the ecosystem? -Assume that we eat herbivores only. As first-level carnivores, how many humans can now be supported in the ecosystem? -If we ate plants only, how many human could be supported by the ecosystem? -If we ate plants only, what would happen to the amounts of energy available for the other herbivores and carnivores in the ecosystem? -Let's look at energy conversion another way. It takes about 0.5 kg of meat to support a human for one day. Assuming that beef is the only available nutrient, how much meat energy (kilograms of meat) will it take to get you to 20 years old? -How much plant energy (kilograms of plant) will it take to feed the beef that gets you to 20 years old? (Refer to question #5.) -Your digestive system is very efficient at digesting meat, but is not as efficient at getting all of the available…arrow_forward
- WHAT IF? Suppose a scientist finds that a populationof plants growing in a breezy location is more prone toherbivory by insects than a population of the samespecies growing in a sheltered area. Suggest a hypothesisto account for this observation.arrow_forwardThe average efficiency of energy transfer between trophic levels is 10%. Use this efficiency to determine how much phytoplankton mass is required to add just 1 gram (0.04 ounce) of new mass to a killer whale, which is a third-level or top carnivore. Create a diagram that summarizes the different trophic levels and the relative size and abundance of organisms at each level. How would your answer change if the efficiency were half the average rate? Twice the average rate?arrow_forwardHow does the ecological impact from a diet consisting strictly of animal products (e.g., dairy products, eggs, and meat) compare with that of a strictly vegetarian diet? How many additional ecologically equivalent Calories do you consume each day by including as little as 10% of your Calories from animal sources?arrow_forward
- Think about the amount of energy at each trophic level. Would you expect to see a food chain with 10 levels in a normal ecosystem?arrow_forwardAs a rule of thumb, about one-tenth of the energy or biomass consumed is stored at each trophic level. About how many kg of feed should it take to produce 1 kg of chicken meat that we eat? How much more energy should it take to provide you a meal of meat compared to vegetables?arrow_forwardBased on the food chain shown below, how can unregulated collection of shark fins used in shark fin soup cause the collapse of a coral reef ecosystem? explain your predicted trends.arrow_forward
- Thinking Critically Does the ocean provide a substantial percentage of all protein needed in human nutrition? Of all animal protein? What is the most valuable biological resource? The fastestgrowing fishery?arrow_forwardAvailability of energy is less for entities at higher trophic levels.Why?arrow_forwardEcosystemA hasprimary production of 1000 g C /m2/yr and ecological efficiency of 10%. Ecosystem B has primary production of 300 g C /m2/yr and an ecological efficiency of 25%. a.Which ecosystem will have more production at thesecondary consumer (carnivore) trophic level? b.Which ecosystem is more likely to support an endothermic primary consumer (herbivore)? c.If atrophic level requires at least 1 gC/m2/yr in order to exist, how many trophic levels can each of these ecosystems support?d.Given your answer to part c, which do you thinkhas a larger impact on the energy available at upper trophic levels: primary productivity or efficiency of energy movement across trophic levels?arrow_forward
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