Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 31, Problem 1AC
List some reasons that the ecological footprints of U.S. residents are very large. How could you reduce the size of your own footprint? How does the ecological footprint of U.S. residents extend into the Tropics?
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Do forest use and grazing make up a larger part of the footprint for temperate-zone industrialized nations such as Canada and the United States or for tropical-zone developing nations such as Kenya and Tanzania? What do you think accounts for this difference between these two types of nations? What else besides land use of forests and grasslands contributes to an ecological footprint?
List three aspects of your lifestyle that could be contributing to some of the losses of the earth’s biodiversity. For each of these, what are some ways to avoid making this contribution?
Some people think that our most environmental goals should be to sharply reduce the rate of population growth in the less-developed countries, where at least 92% of the world’s population is expected to take place between now and 2050. Others argue that the most serious environmental problems stem from high levels of resource consumption per person in more-developed countries, which have moreecological footprints per person. What is your view on this issue? Explain.
Chapter 31 Solutions
Biology: Life on Earth (11th Edition)
Ch. 31 - A factor that increases humanity's ecological...Ch. 31 - Prob. 2MCCh. 31 - Prob. 3MCCh. 31 - Prob. 4MCCh. 31 - Which of the following is not true of a population...Ch. 31 - Prob. 1FTBCh. 31 -
2. Products or processes by which functioning...Ch. 31 - Many of the benefits that humans derive from...Ch. 31 - Prob. 4FTBCh. 31 -
5. The smallest population of a species that is...
Ch. 31 -
6. A Native American saying tells us that “We do...Ch. 31 - Prob. 1RQCh. 31 - What is ecological economics? Why is it important?Ch. 31 - Prob. 3RQCh. 31 -
4. What five specific threats to biodiversity are...Ch. 31 - Why are efforts to protect monarch butterflies a...Ch. 31 - List some reasons that the ecological footprints...Ch. 31 -
2. Search for and describe some examples of...
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- According to the resource-ratio hypothesis (a.k.a. R-star), what factor(s) will determine the maximum number of competing species that could possibly coexist in a community? (Note: either one or more-than-one answer could be correct) .what does the number of limiting resources in a community tell us? The number of limiting resources in the community The net primary productivity of the community (NPP). The number of trophic levels that are present in the community. | The intrinsic rate of increase (r) of each species in the community. The colonization rate of each species that can access the habitat.arrow_forwardA conceptual model representing the role, interaction, reaction, and density of essential ecosystem components is shown below. Examine the model and the relationships between the major players (i.e., predator, prey, producer). The structure's most important role is played by these major players. It's also worth noting that nutrition has been included in the model. This is the abiotic component that has a direct or indirect impact on the interaction. Question: Why does the organism’s interaction appear in an oscillating pattern? What does it suggest?arrow_forwardA conceptual model representing the role, interaction, reaction, and density of essential ecosystem components is shown below. Examine the model and the relationships between the major players (i.e., predator, prey, producer). The structure's most important role is played by these major players. It's also worth noting that nutrition has been included in the model. This is the abiotic component that has a direct or indirect impact on the interaction. Question: Based on this scenario, what is the most significant role of sea otters in the marine community? Why it’s important?arrow_forward
- 1. Let's take a brief look at ecological footprints on the national level. This is important, because each nation has different environmental policies and cultures. Do a comparison of your home country with others around the world using the instructions below. Use this Footprint of Nations website: (http://data.footprintnetwork.org/#/) Use the interactive map showing average ecological footprints for various countries. I recommend you choose the map option showing Ecological Deficit/Reserve. Once you have selected a country, a graph will appear showing the ecological footprint and biocapacity/ natural resource capacity of your selection. What you are determining is how much natural resource capital a nation has vs. how much it is using. List those values in the chart for the most recent year given. Be careful here: Because this is international information (metric system), the units of measure are in hectares, not acres! You can use either measurement but if you use acres you will…arrow_forwardUsing the African Savannah food web below, describe what would happen to various animals and plants if Impala were hunted to extinction? Remember to consider how various levels might be helped, harmed, or unaffected. Must explain impact on at least two different trophic levels. African Grassland Food Web Cheetah Leopar Lion Hunting dog Glraffe Impala Babeon Wildebeest Acacia Grames Termites Zebraarrow_forwardA given ecosystem has the following amounts of energy available at each trophic level: Primary producers: 4,000 gC/m2/day; Primary consumers: 480 gC/m2/day; Secondary consumers: 72 gC/m2/day; Tertiary consumers: 24 gC/m2/day. Does this ecosystem follow Lindeman's Law for ecological efficiency? No, the average efficiency is 20% O Yes, the average efficiency is 10% O No, the average efficiency is 10% O Yes, the average efficiency is 20%arrow_forward
- You are studying primary productivity and biodiversity patterns of an ecosystem. The ecosystem is represented by the climatograph below. The Gross Primary Productivity (GPP) is measured to be 5000 grams of carbon per square meter per year, and the Total Respiration (RT) is measured to be 300 grams of carbon per square meter per year. - What kind of biome is this? - Calculate the Net Ecosystem Production (NEP) for this ecosystem - What does the calculated NEP value indicate about the carbon balance and overall productivity of the ecosystem? (one sentence) - Based on both the climatograph and the NEP, what can you say about the biodiversity of plants versus consumers? Choice 1 of 4:plant biodiversity is greater than consumer biodiversity Choice 2 of 4:consumer biodiversity is greater than plant biodiversity Choice 3 of 4:consumer biodiversity is the same as plant biodiversity Choice 4 of 4:lower plant biodiversity compared to consumer biodiversityarrow_forwardWhat are some advantages of ecotourism for a state like Hawai‘i? What might be a potential disadvantage? Describe a source of ecotourism that exists—or could exist—in your own regionarrow_forwardWhich of the following statements about the concept of ecological niche is correct? A species' realized niche, may or may not be the same as its fundamental niche The fundamental niche of a species includes biotic and abiotic factors while the realized niche only includes biotic factors A species' fundamental niche is always smaller than its realized niche A niche is the same as a habitatarrow_forward
- Which one of the following sentences is NOT true? Select one: Compared with other land-based food production systems, fisheries and aquaculture have a relatively small overall carbon footprint. Global fish production from capture and culture operations contributed up to 1.5% to the world’s CO2 emissions. CO2 emissions by marine and inland fishing vessels were about 0.5% of the total global emissions. Being a minor contributor in global terms, fisheries and aquaculture have no opportunities to mitigate emissions of greenhouse gases.arrow_forwardA conservation organization has hired you to lead efforts to reduce the loss of biodiversity in a tropical country. Which of the following problems would you focus on first and why: habitat destruction and fragmentation, hunting and fishing activity, harvesting of wild species for commercial sale, or introduction of exotic organisms?arrow_forwardThe Law of 10 determines all the following characteristics except one. Which one characteristic does the Law of 10 NOT determine? Group of answer choices The abundance of individuals at various trophic levels The amount of energy stored in the combined biomass of various trophic levels The combined mass of individuals at various trophic levels The length of food chains The number of species at various trophic levelsarrow_forward
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GCSE Biology - Adaptations #79; Author: Cognito;https://www.youtube.com/watch?v=tC-u8xcZYSM;License: Standard Youtube License