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- Differentiate between:a. Biotic and abiotic componentsb. Producers and consumersc. Omnivores and decomposersd. Macro and microecosysteme. Ecosystem and biomeWRITE ABOUT A THEME: Energy and MatterDecomposition typically occurs quickly in moist tropicalforests. However, waterlogging in the soil of some moisttropical forests results over time in a buildup of organicmatter called “peat.” In a short essay (100–150 words), discussthe relationship of net primary production, net ecosystemproduction, and decomposition for such an ecosystem. AreNPP and NEP likely to be positive? What do you think wouldhappen to NEP if a landowner drained the water from atropical peatland, exposing the organic matter to air?Compare renewable versus nonrenewable resources.
- Examples of biotic factors inculdeWhichstatement about changing ecosystem properties during succession is false?a.Biomass increasesb.Community respiration increasesc.Primary production increasesd.Soil depths decreasee.Stream spiraling lengths decreaseExplain how the use of fossil fuels and the production of pollution impact the environment.
- Indentify sources of Water Vapour (A GreenHouse Gas).Involves the participation of decomposers a. water cycleb. carbon cyclec. nitrogen cycled. phosphorus cyclee. none of the cyclesf. all of the cyclesBiocapacity isa. the carrying capacity of an ecosystem.b. the area of Earth required to produce the resources usedby humans.c. the number of species in an ecosystem.d. the amount of sustainable resources and wasteabsorbingcapacity of Earth.
- 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…Organisms at a higher trophic level have less energy available.comment.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