环境科学-交叉学科Review答案总结.docVIP

Preface Env. interrelationships Answers To Review Questions of lecture 1(page17) 1.Describe why finding solutions to environmental problem is so difficult. Do you think it has always been as complicated? Finding solutions is difficult because different groups have different political and economic views on what constitutes an environmental problem. Finding solutions has not always been complicated because in the past the economy was less complicated and few people understood the long-term environmental consequences of their actions. 4. define environment and ecosystem and provide examples of these terms from your region. The environment is the surrounding conditions that affect people and organisms. More broadly, it means everything that affects an organism during its lifetime. For example, the environment of the grizzly bear includes the physical conditions, such as climate and habitat, as well as political and social decisions that affect its life. An ecosystem is a region in which organisms and their physical environment form an interacting unit. An example is the old-growth forest of the forested West. 5. describe how environmental conflicts are resolved. Environmental conflicts arise when groups disagree on what constitutes an environmental problem. Some people may feel justified in their use of a natural resource while others may feel there is a diminished environment. Compromise between the groups is necessary. Government should assist in assuring that all points of view are recognized and that a fair decision is made. Economic and regional issues and long-term impact should be taken into consideration when reaching the final compromise. Chap5 Interactions: Env.Organisms Answers To Review Questions(lecture 2) 1. define environment. An organisms environment is everything affecting it during its lifetime. It includes both biotic (living) and abiotic (non-living) elements. 2. describe, in detail, the niche of a human. A niche is the functional role of an organism