Biology > QUESTIONS & ANSWERS > _Lesson 4.3 Cycles of Matter Energy Flow in Ecosystems Gainesville High School, Gainesville - BIO 1 (All)

_Lesson 4.3 Cycles of Matter Energy Flow in Ecosystems Gainesville High School, Gainesville - BIO 1107 ALL ANSWERS CORRECT AND HIGHLIGHTED IN YELLOW

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Read Lesson 4.2 Energy Flow in Ecosystems (pg. 123-131) *Write a minimum of two 5-sentence paragraphs summarizing the reading.* Answer the following questions (pg. 131) 1) How does the way that mat... ter cycles through an ecosystem differ from the way that energy flows? The flow of energy has a one way flow through living things while the matter is recycled within and between ecosystems. 2) What two processes cycle water from the land to the atmosphere? The 2 processes that cycle water from the land to the atmosphere are evaporation and transpiration. 3) Why do living organisms need nutrients? Living organisms need nutrients because nutrients are necessary for the lives of all living organisms. Nutrients build tissues and carry out essential life functions. 4) Explain how a nutrient can be a limiting factor in the ecosystem. This is when an ecosystem is limited by a single nutrient that is scarce or cycles very slowly, (limiting nutrient.) often take over the ecosystem. 5) ANALYZE DATA - Based on your knowledge of the carbon cycle and the graph in Figure 4-12 (pg. 128), predict what will happen if humans continue to clear and burn vast areas of forests for farming? If vast areas of forests are burned for farming, the amount of carbon that is released into the biosphere will increase. 6) CONSTRUCT AN EXPLANATION - Describe one way in which water from the ocean may make one complete cycle through the atmosphere and back to the ocean. Include the names of each process involved in your cycle. One way is when ocean water evaporates into water vapor. Once the water droplets are big enough, they fall down to earth as precipitation. 7) SKIP 8) CASE STUDY - Review the nitrogen and phosphorus cycles. How is fertilizer runoff related to algal blooms? The phosphorus is minded, then turned into fertilizer, finally, it put on crops. The amount left can go into oceans, streams, and rivers.(runoff) Summary Biogeochemical cycles are powered by the flow of energy. Processes that drive these cycles are known as biological processes, geological processes, physical and chemical processes, and human activities. Biological processes consist of any activities performed by living organisms. Geological processes include volcanic eruptions, formation and breakdown of rock and major movement of anything below the surface of the earth. Physical and Chemical processes [Show More]

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