25. Modern agroecosystems differ from natural ecosystems in all of the following ways except: A. they attempt to suppress ecological succession by allowing only pioneer species to thrive B. they tend to raise crops in multiculture rather than monoculture (a single species) C. they tend to plant crops in neat, orderly rows rather than complex spatial arrangements D. they make the food chain less complex, so that lower species diversity results E. they (the artificial ecosystems) tend to be less complex than the natural ecosystems

25. Modern agroecosystems differ from natural ecosystems in all of the following ways except: A. they attempt to suppress ecological succession by allowing only pioneer species to thrive B. they tend to raise crops in multiculture rather than monoculture (a single species) C. they tend to plant crops in neat, orderly rows rather than complex spatial arrangements D. they make the food chain less complex, so that lower species diversity results E. they (the artificial ecosystems) tend to be less complex than the natural ecosystems

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter45: Community Ecology

Section: Chapter Questions

Problem 1CT: With antibiotic resistance rising, researchers are looking for ways to reduce use of these drugs....

See similar textbooks

Similar questions

Many people who want to reduce their ecological footprinthave focused on how much energy is expended (and howmany climate-warming greenhouse gases are emitted) intransporting food from its place of production to its place ofsale. The typical grocery store item is shipped by truck, air,and/or sea for many hundreds of miles before reaching theshelves, and this transport consumes oil. This concern over“food-miles” has helped drive the “locavore” movement tobuy and eat locally sourced food.However, food’s transport from producer to retailer, asmeasured by food-miles, is just one source of carbon emissionsin the overall process of producing and delivering food. In2008, environmental scientists Christopher Weber and H. ScottMathews conducted a thorough life-cycle analysis (p. 400) ofU.S. food production and delivery. By filling in the table below,you will get a better idea of how our dietary choices contribute toclimate change. After measuring mass, energy content, and dollar valuefor each…
The major source of nutrients in the headwaters of a small stream is form: a. dead leaves and other organic matter from adjacent land. b. photosynthesis by phytoplankton. c. photosynthesis by floating aquatic plants. d. the activity of chemoautotrophic bacteria. e. minerals from the underlying bedrock.
The ability of an ecosystem to return to its equilibrium state after an environmental disturbance is called.__________ resistance restoration reformation resilience
55) Which statement most accurately describes how matter and energy are used in ecosystems? A) Matter flows through ecosystems; energy cycles within a single ecosystem. B) Energy flows through ecosystems; matter cycles within and through ecosystems. C) Energy can be converted into matter; matter cannot be converted into energy. D) Matter can be converted into energy; energy cannot be converted into matter. E) Matter is used in every ecosystem; energy is only used in some ecosystems. 56) To recycle nutrients, an ecosystem must have, at a minimum, A) producers. B) producers and decomposers. C) producers, primary consumers, and decomposers. D) producers, primary consumers, secondary consumers, and decomposers. E) producers, primary consumers, secondary consumers, top carnivores, and decomposers. 57) Which of the following is an example of bioremediation? A) bulldozing the land around an abandoned strip mine to combat erosion B) scraping a river bottom with a tool to remove…
1. Explain what environmental factors (biotic and/or abiotic) would most likely affect the differences between the Mohn Hill Natural Area and Snyder-Middleswarth Natural Area?
In an ecosystem, these organisms are responsible for convertingsolar energy to the stored energy found in organic compounds. a. herbivoresb. decomposersc. producersd. carnivorese. None of these are correct.
With antibiotic resistance rising, researchers are lookingfor ways to reduce use of these drugs. Some cattle oncefed antibiotic-laced food now get probiotic feed that canbolster populations of helpful bacteria in the animal’sgut. The idea is that if a large population of beneficialbacteria is in place, then harmful bacteria cannot becomeestablished or thrive. Which ecological principle is guiding this practice?
7) Describe how the types of vegetation present on this farmland would change if a fire burned down all the trees 120 years after the land was abandoned.
1.) Describe a food chain that has at least four different trophic levels. Label the tropic level (Producer, Primary consumer, Secondary Consumer, or Tertiary Consumer), whether the organism is a(n) autotroph or heterotroph, and provide an example of an organism at each tropic level. 2.)Name two biological processes involved in rapid carbon exchange: 3.)Name two geologic processes involved in long-term carbon exchange:
1. Distinguish between Primary and Secondary succession. Which of these processes would you expect to proceed more rapidly?
A salmon feeds on crabs and small fishes, which in turn feed on zooplankton that feed on phytoplankton which in turn uses up nitrates in the water. If there are overfishing of salmons, which things should decrease? a. zooplanktonb. small fishc. phytoplanktond. a and de. b and c
What are some advantages of being part of a food web rather trhan a food chain?