6. The Philippines is one of the most severely deforested countries in the tropics and most deforestation has happened in the last 40 years. Estimates place forest cover in the Philippines in the year 1900 at 21 million hectares, covering 70 % of the total land area. What specific type of threat to biodiversity describes in the situation? * A. Pollution B. Introduction of Invasive species C. Climate change D. Habitat destruction

6. The Philippines is one of the most severely deforested countries in the tropics and most deforestation has happened in the last 40 years. Estimates place forest cover in the Philippines in the year 1900 at 21 million hectares, covering 70 % of the total land area. What specific type of threat to biodiversity describes in the situation? * A. Pollution B. Introduction of Invasive species C. Climate change D. Habitat destruction

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter53: Population Interactions And Community Ecology

Section: Chapter Questions

Problem 7TYK: The change in the species composition of a terrestrial community from bare and lifeless rock to...

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The change in the species composition of a terrestrial community from bare and lifeless rock to climax vegetation is called: a. disturbance. b. competition. c. secondary succession. d. primary succession. e. facilitation.
8. The diagram below represents different stages of an ecosystem over a period of time. D-Hardwood forest stage C-Pine forest stage A-Grass stage B-Shrub stage Bare field Y Time Which stage of the ecosystem has the greatest long-term stability? O A) Stage A O B) Stage B O C) Stage C O D) Stage D 3. 4 hp # 24 % & 1 2 3 4 W e r y a
C. Legally protecting endangered species D. Regulating hunting and fishing 34. A wooded area has been divided by a housing development and is threatenin What term is used to describe this threat from human activities? A. habitat fragmentation B. acid precipitation C. habitat augmentation D. global warming 35. Which of the following is NOT a characteristic of an invasive species? A. They grow rapidly and outcompete with other plants or animals B. They produce large numbers of seeds/offspring at a young age C. They have very specific needs or requirements to survive 36. Which of the following was NOT a cascade effect from introducing wolv A. The change in the shape/path of the river B. The change in elk grazing areas C. Destruction of the Yellowstone ecosystem P. Reduction in the coyote population, increasing the raptor populat
2. Which of the following causes of deforestation is not caused directly by humans? A. overharvesting of wood (for cooking and heating) B. overharvesting of timber (for making paper) C. slash-and-burn agriculture (for farming) D. overharvesting of lumber (for making furniture) E. insect defoliation of trees (by infestations like the Japanese beetle)
4. what would be an example of a landscape ecology study? a. the investigation of how black bears are important in seed dispersal b. the investigation of the reproduction and growth of black bears living in NJ c. the investigation of how black bears move nutrients and energy from the edge of the forest to the interior of the forest d. the investigation into the metabolism of a black bear during hibernation
29. In some parts of the world, forests are being cut down and burned to clear land for new homes and new farmland. A negative effect of these activities might be A. an increase in edge effect B. a decrease in the average temperature of the atmosphere C. an increase in biodiversity of the deforested areas 30. Which action by humans could improve the quality of the air? A. building homes that use only oil (fossil fuel) furnaces for heat B. buying cars that get more miles per gallon of gasoline C. increasing the number of coal-burning power plants that generate electricity D. cutting down forests to clear land for factories 31. Which action shows an increased understanding and concern by humans for nature? A. importing organisms that could become invasive to try stabilizing existing ecosystems B. getting rid of pollution control laws for industries that promote technology C. removing natural resources at a rate equal to the needs humans D. putting laws in place that regulate the number…
4. A forest that formerly lost all of its trees to cutting, but has regrown, is properly called: A. an open forest B. a second-growth forest C. a virgin forest D. a closed canopy forest E. a savanna
5. Secondary succession always begins with which of the following species? A. mature species (like sugar maple trees in a deciduous forest habitat) B. intermediate species (like cherry trees in a deciduous forest habitat) C. climax species (like beech trees in a deciduous forest habitat) D. pioneer species (like crabgrass in a deciduous forest habitat) E. none of the above
2. How does a legacy effect (large falling and roots rip up the soil creating a pit/mound) impact biodiversity? a. It decreases biodiversity because it decreases habitat heterogeneity b. It increases biodiversity because it increases habitat heterogeneity c. It decreases biodiversity because it increases habitat heterogeneity d. This does not impact heterogeneity
44. Which of the following successional species would be able to grow (like the Sudbury smelters in Ontario, Canada)? A. long-lived species (like sugar maples) B. mature species (like oak trees) C. pioneer species (like grasses) D. intermediate species (like pine trees) E. all of the above will be equally able to grow close to a point source of heavy metal pollutants the closest to a point source of heavy metal pollution
a. One 6 Several 6. The simplest grouping of more than one kind of organism in the biosphere is a. An ecosystem b. A population OA community d. A species 7. The lowest level of environmental complexity that includes living and factors in the ecosystem. 8. An example of producers is Grass 9. Sunlight is the original source of allProducer in most ecosystems. food supply from inorganic 10. A producer uses energy to produce its compounds. 11. A heterotroph is an organism that make its own food. Can b. Cannot
25. Why is blodiversity importantr Blodiwardty A. Disease resistant plants in wild B. Plants provide oxygen, natural processes clean water C. Beauty and scientific value D. All of the above 24. What happens to biodiversity as you go further away from the equator? A. Increases B. Decreases C. Stays the same 25. When talking about biodiversity, the term "hotspots" refers to areas that have a lot of A. pollution B. global warming C. endemic species D. endangered species 26. A biologist is searching for a new plant-based antibiotic. In which of the following types of ecosystems would the biologist have the best chance of finding new kinds of plants to use in her research (which is the most biodiverse area of the options below)? A. highland desert B. temperate deciduous forest C. polar tundra D. tropical rainforest 27. The wetland plant purple loosestrife was imported to North America from Europe. Since its introduction, the loosestrife has spread, which has resulted in a dramatic decline…