Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 42.1, Problem 2CC
WHAT IF? You are studying nitrogen cycling on the Serengeti Plain in Africa. During your experiment, a herd of migrating wildebeests grazes through your study plot. What would you need to know to measure their effect on nitrogen balance in the plot?
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please draw! make everything clear please!
Create a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.
please draw!
Create a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.
FOOD WEB AND FOOD CHAIN WORKSHEET
1 Look at this food chain.
lettuce
greenfly
ladybird
thrush
cat
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a What does the arrow mean in a food chain?
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b Name the producer in the food chain
c Name the third trophic level in the food chain.
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d Name the tertiary consumer in the food chain.
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e What is the ultimate source of energy that drives the food chain?
Chapter 42 Solutions
Campbell Biology in Focus
Ch. 42.1 - Why is the transfer of energy in an ecosystem...Ch. 42.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 42.1 - MAKE CONNECTIONS Use the second law of...Ch. 42.2 - Why is only a small portion of the solar energy...Ch. 42.2 - How can ecologists experimentally determine the...Ch. 42.2 - Prob. 3CCCh. 42.2 - Prob. 4CCCh. 42.3 - If an insect that eats plant seeds containing 100...Ch. 42.3 - WHAT IF? Detritivores are consumers that obtain...Ch. 42.4 - Prob. 1CC
Ch. 42.4 - Prob. 2CCCh. 42.4 - Prob. 3CCCh. 42.5 - Prob. 1CCCh. 42.5 - How do bioremediation and biological augmentation...Ch. 42.5 - Prob. 3CCCh. 42 - Prob. 1TYUCh. 42 - Which of these ecosystems has the lowest net...Ch. 42 - Prob. 3TYUCh. 42 - Prob. 4TYUCh. 42 - Which of the following has the greatest effect on...Ch. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - Prob. 8TYUCh. 42 - INTERPRET THE DATA Draw a simplified global water...Ch. 42 - SCIENTIFIC INQUIRY Using two neighboring ponds in...Ch. 42 - Prob. 11TYUCh. 42 - FOCUS ON ENERGY AND MATIER Decomposition typically...Ch. 42 - Prob. 13TYU
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- Optional Exercise Barn Owls produce 2 pellets per day. Assume each pellet contains 80g of biomass. Also assume that one 40g vole can cause 50 cents of crop damage to a farm per season. If a Barn Owl family of seven (2 adults and 5 young) lives on a farm for 12 weeks and feeds entirely on voles, how much will the farmer save in crop damages?arrow_forwardTransfer of energy problem solving: Let us assign some values to the energy that flows in each trophic level. Assuming that the amount of energy that reaches a one (1) hectare of farmland is 10 million kcal/year. 1.4 What is the available energy to the quaternary consumer if the tertiary consumer had eaten 40 % of the stored energy in the secondary consumer? 2.3. How much energy is available to the tertiary consumer if the secondary consumer had eaten 30 % of the energy stored in the herbivore?arrow_forwardRagweed Black-tailed jackrabbit Coyote Deer mouse Grama grass Red-tailed hawk 21 Which of the following energy pyramids best represents the flow of energy in the food web pictured? A Red-tailed hawk Coyote Deer mouse Deer mouse Ragweed Coyote Black-tailed jackrabbit Red-tailed hawk Black-tailed jackrabbit Grama grass Ragweed Grama grass в D Coyote Red-tailed hawk Coyote Grama grass Deer mouse Red-tailed hawk Black-tailed jackrabbit Black-tailed jackrabbit Ragweed Grama grass Ragweedarrow_forward
- Find the flaws! Energy in a terrestrial ecosystem moves from the sun, to producer, to primary consumer, to secondary consumer, ending in a tertiary consumer. Producers are heterotrophs and consumers are autotrophs. Biomagnification in how the amount of toxin in an organism will increase as you move up a food chain. For example, a plant might only have a little toxin but an herbivore eats a lot of plants. So, now the herbivore has a medium amount of toxin. A carnivore eats a lot of herbivores and now the carnivore has a high amount of toxin and is sick. The water cycle has five important processes. Evaporation which is water turning into vapor. Condensation and precipitation refer to water vapor turning into liquid or solid water. Subsurface water flow feeds rivers and streams. Surface runoff is water from precipitation gathering in streams. Streamflow moves water from mountains to oceans. Carbon can cycle either quickly or slowly. “Fast” carbon cycling happens in biology.…arrow_forwardQ4.22. A researcher is studying the global biogeochemical cycling of nutrient X, and they have determined that its storage rate in the oceanic subsystem is -10 Pg y¹. What can be concluded from this observation? Use the dropdowns below to complete your answer. The oceanic nutrient X pool size is cycles are closed, the pool size of Submit increasing decreasing , and because Earth's global biogeochemical nother subsystem is Resetarrow_forwardQ3.24. Nutrient retention is an important concept that is often used to help understand and mitigate human-caused changes to nutrient cycling in ecosystems. How would a scientist describe nutrient retention? Use the dropdowns below to complete your answer. Nutrient retention is a measure of how effectively a system limits Submit ◆. When nutrients are retained by a system, they Reset Use the following information for the last question. Farmers often rely on riparian forests- strips of forest vegetation immediately adjacent to streams-to reduce the export of nutrients via streams. The nitrogen budget to the right represents a system containing both corn fields and riparian forest. Researchers want to know if the forest helps retain nutrients from anthropogenic inputs (deposition and fertilizer). 1 Corn/Forest Ecosystem Nitrogen Budget Deposition 10 Fertilizer 135 130 Denitrification 5 Corn Harvest 50 Nitrogen Fluxes (kg ha-¹ y-¹) Q3.25. How much of the observed nitrogen fluxes does the…arrow_forward
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