Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 6SQ
Over a period of many years, grass grows on a sand dune, then shrubs grow, and then eventually trees grow. This is an example of ecological _____.
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Chapter 20 Solutions
Campbell Essential Biology (7th Edition)
Ch. 20 - Prob. 1SQCh. 20 - According to the concept of competitive exclusion,...Ch. 20 - Prob. 3SQCh. 20 - Prob. 4SQCh. 20 - Why are the top predators in food chains most...Ch. 20 - Over a period of many years, grass grows on a sand...Ch. 20 - According to the energy pyramid, why is eating...Ch. 20 - Local conditions, such as heavy rainfall or the...Ch. 20 - Prob. 9SQCh. 20 - Prob. 10SQ
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- Growth of a forest in an abandoned corn field is an example of _______. a. primary succession c. secondary succession b. resource partioning d. competitive exclusionarrow_forwardWhich of the following biomes is characterized by abundant water resources? a. deserts b. boreal forests c. savanna d. tropical wet forestsarrow_forwardThe pattern of recovery in a community after a disturbance is called ___________________. biogeochemical cycling a trophic cascade ecological succession the trophic structurearrow_forward
- Which environmental issue is most closely associated with rural poverty-stricken regions where people rely almost exclusively on their local environment for survival? a. air pollutionb. groundwater pollutionc. desertificationd. eutrophicationarrow_forwardWhy is economics important in the analysis of the environmental status/ ecological integrity?arrow_forwardWhat are the possible effects of some ecological threats to the health of an ecosystem? Use the table format provided. You may add rows. Ecological threat effects to ecosystemarrow_forward
- Which of the following is a component of an ecosystem but not of an ecological community? (a) a producer (b) water (c) a secondary consumer (d) a primary consumerarrow_forwardIf you had to monitor an ecosystem for evidence of pollution, what are one or two indicator species you would want to pay particularly close attention to? You may discuss specific species of organisms, or can discuss organisms that occupy a specific trophic level in an ecosystem’s food web. Explain why you would select these species or this trophic level.arrow_forwardIf the ecological footprint per person of a country or theworld is larger than its biological capacity per person toreplenish its renewable resources and absorb the resulting waste products and pollution, the country or theworld is said to have an ecological deficit. If the reverse istrue, the country or the world has an ecological credit orreserve. See Figure 1.11 for a map of the world’s ecologicaldebtor and creditor countries. Use the data to the right tocalculate the ecological deficit or credit for the countrieslisted. (As an example, this value has been calculated andfilled in for the world.)1. Which three countries have the largest ecologicaldeficits? For each of these countries, why do youthink it has a deficit?2. Rank the countries with ecological credits in orderfrom highest to lowest credit. For each country, whydo you think it has an ecological credit?3. Rank all of the countries in order from the largest tothe smallest per capita ecological footprint.arrow_forward
- A 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_forwardto be sustainable, the total ecological footprint of an area’s population must be smaller than the ____ a. Per capita ecological footprint b. Environmental degradation c. Bio capacity d.natural capital e.population growtharrow_forwardChoose TWO (2) different types of ecosystem, in your surrounding area. The area can be in your yard or in your neighbourhood, which is easily accessible to you. a) the two types of ecosystems that can be identified during the observation b) abiotic and biotic factors in each ecosystem (FOUR examples ofinteractions).arrow_forward
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