Campbell Biology: Concepts.. (Custom Package)
8th Edition
ISBN: 9781323042649
Author: Central Texas
Publisher: PEARSON
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Chapter 37, Problem 7TYK
The open ocean and tropical rain forests contribute the most to Earth’s net primary production because
a. both have high rates of net primary production.
b. both cover huge surface areas of Earth.
c. nutrients cycle fastest in these two ecosystems.
d. the ocean covers a huge surface area and the tropical rain forest has a high rate of production.
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The total amount of energy taken up by producers through photosynthesis in an ecosystem is known as...?
Group of answer choices
a. evaporation
b. net primary production
c. standing crop
d. nutrient limitation
e. gross primary production
"Write a scenario describing what would happen to an ecosystem or to the human system in the event that:(a) All producers are killed through loss of fertility of the soil or through toxic contamination, (b) decomposers and detritus feeders are eliminated.
Support all of your statements with reasons drawn from your understanding of the way ecosystems function"
a. What factors cause energy to decrease with each trophic level?b. How is it possible for energy to be lost and the ecosystem to stillrun efficiently?c. Are the nutrients on the earth a renewable resource? Why or why not?
Chapter 37 Solutions
Campbell Biology: Concepts.. (Custom Package)
Ch. 37 - Fill in the blanks in the table below summarizing...Ch. 37 - Fill in the blanks in the table below summarizing...Ch. 37 - Which of the following groups is (are) absolutely...Ch. 37 - Prob. 4TYKCh. 37 - Prob. 5TYKCh. 37 - Prob. 6TYKCh. 37 - The open ocean and tropical rain forests...Ch. 37 - Prob. 8TYKCh. 37 - Prob. 9TYKCh. 37 - Prob. 10TYK
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- In the English Channel ecosystem, the number of primary producers is smaller than the number of primary consumers because________. a. the apex consumers have a low turnover rate b. the primary producers have a low turnover rate c. the primary producers have a high turnover rate d. the primary consumers have a high turnover ratearrow_forwarda) Each trophic level, on average, will move 10% of the energy tied up in molecules to the next trophic level. How much of the energy from the sun is actually brought in to the first trophic level? b) When the producers convert energy and tie it up in the first trophic level, it is brought in as heat. True or false? c) Which of the following are true about ecosystems? Check all that apply. They contain both living and nonliving components.They contain both living and nonliving components. There is a transfer of energy through the system and some energy is lost as heat energy.There is a transfer of energy through the system and some energy is lost as heat energy. Nutrients repeatedly cycle through the ecosystem.Nutrients repeatedly cycle through the ecosystem. They represent the lowest level of biological organization.They represent the lowest level of biological organization. The ultimate source of energy for most ecosystems is organic molecules.arrow_forwardOne of the lessons from a pyramid of production is that _____. A) eating grain-fed beef is an inefficient means of obtaining the energy trapped by photosynthesis B) the energy lost as heat or lost in cellular respiration is 10% of the available energy of each trophic level C) only one-half of the energy in one trophic level is passed on to the next level D) most of the energy from one trophic level is incorporated into the biomass of the next level E) production efficiency is highest for primary consumersarrow_forward
- Which biogeochemical cycle does not have a gaseous component but cycles from the land to sediments in the ocean and back to the land? (a) carbon cycle (b) nitrogen cycle (c) phosphorus cycle (d) hydrologic cycle (e) neither a nor c has a gaseous componentarrow_forwardThe producer in an ocean grazing food web is usually a _____. a. plant b. animal c. fungi d. planktonarrow_forwardOrganisms 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 consumersarrow_forward
- Primary productivity on land is affected by _______. a. nutrient availability c. temperature b. amount of sunlight d. all of the abovearrow_forwardConverting a prairie to a farm field is an example of _________. a. overharvesting b. habitat loss c. exotic species d. climate changearrow_forwardIf there were already enough nutrients present, what would be the TWO most important characteristics of a terrestrial ecosystem that would result in HIGH NPP? (your answers will give a possible range of values - I want to know which end of the range generates high NPP. If it was nutrients (which it is not), you might to say high levels of nutrients (as opposed to low levels).)arrow_forward
- In most ecosystems, the primary producers use energy from______ to build organic compounds. a. sunlight b. heat c. breakdown of wastes and remains d. breakdown of inorganic substances in the habitatarrow_forwardNitrogen availability is a limiting factor in crop production. * D. Disagree, because atmospheric nitrogen is about 80% and therefore nitrogen is readily available. A. Agree, because almost 80% of the atmospheric nitrogen (N2) is readily available. C. Agree, because atmospheric nitrogen must first be reduced to ammonia through N-fixation. B. Disagree, because only a small fraction of the atmosphere is composed of nitrogen gas.arrow_forwardWhich statement about energy flow in ecosystems is accurate? A.Energy flow reaches an equilibrium within ecosystems such that every trophic level has the same amount of energy. B. Because forests have relatively few large trees which support numerous smaller organisms, they have less energy at the lowest trophic level than at higher trophic levels. C. Energy is recycled within ecosystems, moving from producers to consumers to decomposers and back to producers. D. Energy flows through ecosystems with some lost at every transition resulting in lower trophic levels always containing more energy than higher trophic levels. E. Aquatic ecosystems have more energy at higher trophic levels than at lower trophic levels, whereas terrestrial ecosystems have more energy at lower trophic levels. Please answer asap and type your answer and do not copy from anywhere pleasearrow_forward
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