1. Billy is stranded on an island. He has unlimited access to water, six chickens, and a few bagsof corn. He is considering his options for how to survive on the island until he is rescued. Draw amodel of the food web and the trophic pyramid on the island for each of these three options.Option A: Feed all the corn to the chickens and eat their eggs.Trophic PyramidFood WebOption B: Share the corn with the chickens. Eat their eggs, then eat the chickens when the cornruns out.Food WebTrophic PyramidOption C: Eat the chickens first, then eat the corn.Food WebTrophic Pyramid

A. Food web Corn->chicken->egg-> me tropical pyramid me egg chicken corn

Answered: 1. Billy is stranded on an island. He…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter54: Ecosystems And Global Change

Section: Chapter Questions

Problem 1TYK

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Similar questions

The loss of an apex consumer would impact which trophic level of a food web? primary producers primary consumers secondary consumers all of the above
The amount of energy available at the highest trophic level in an ecosystem is determined by: a. only the gross primary productivity of the ecosystem. b. only the net primary productivity of the ecosystem. c. the gross primary productivity and the standing crop biomass. d. the net primary productivity and the ecological efficiencies of herbivores. e. the net primary productivity and the ecological efficiencies at all lower trophic levels.
Organisms at the first trophic level ________. a. capture energy from a nonliving source b. are eaten by organisms at lower trophic levels c. are shown at the top of an energy pyramid d. are consumers
Organisms at the lowest trophic level in a tallgrass prairie are all _______. a. two steps away from the original energy input b. autotrophs c. heterotrophs d. both a and b e. both a and c
In the Chesapeake Bay estuary, the blue crab is an omnivore that eats eelgrass and other primary producers as well as clams. It is also a cannibal. In turn, the crabs are eaten by humans and by the endangered Kemp's Ridley sea turtle. 1) Based on the above information, describe the food web that includes the blue crab. Identify the trophic levels and the organisms that occupy each. Some organisms may occupy more than one trophic level. 2) Assuming that top-down control occurs in this system, describe what would happen to the abundance of eelgrass if humans stopped eating blue crab.
7)Which of the following is the best definition of a trophic cascade? a)Significantly changing the population size of one species causes significant changes in the population dynamics of other species b)Adding or removing one species causes significant changes the population dynamics of other species in the community c)Significantly changing the population size of a species at one trophic level causes significant changes in the population dynamics of populations that do not directly interact with this species d)Adding or removing species causes a collapse of the food web for that community e)None of these definitions are accurate
1. Why is that there are no more than 5 or 6 trophic levels in a community? 2. Why do we need to conserve or protect threatened or endangered species, and how does the loss of species affect communities? 3. Why are population sizes not constant?
1. a)Write an essay on ecosystem productivity. b) Define ecological pyramid and indicate the limitations of ecological pyramids. c) Explain why detritivores, decomposers and omnivores are not assigned trophic level.
1. Two predators feed on small antelope. One predator weighs 100 kg, and the other weighs 35 kg. Explain what might happen if the two predators share the same area. 2. Wolves are reintroduced into a park. As a result, the vegetation changes. Explain how the changes to the vegetation happened. 3. Find out about the niche of wolves in their community. Determine if they are a keystone species. Then, write a one-page essay describing their role in their ecosystem.
At which point in the trophic pyramid is the greatest arount (not percentage) of energy lost? A) Between the primary producers and the primary consumers B) Between the primary consumers and the secondary consumers C)Between the secondary consumers and the tertiary consumers D) Between the secondary consumers and the primary producers
An estimated 1000 kg of plant plankton are needed to produce 100 kg of animal plankton. The animal plankton is in turned consumed by 10 kg of fish, the amount needed by a person to gain 1 kg of body mass. i) explain why the amount of biomass declines at each successive trophic level.
Which trophic level(s) must be present to sustain any ecosystem?a. producers onlyb. producers and consumersc. producers, detritivores, and decomposersd. producers, consumers, detritivores, and decomposers

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