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Concept explainers
To list: The observations made by biologists that support the theory of evolution.
Introduction: Members of the species living in a particular area at a particular time which are capable of interbreeding are known as population. Populations change to produce new species over time. Evolution refers to the changes in characteristics of the population which are transferred over several generations through time.
To determine: The most convincing and the least convincing observation.
Introduction: Members of the species living in a particular area at a particular time which are capable of interbreeding are known as population. Populations change to produce new species over time. Evolution refers to the changes in characteristics of the population which are transferred over several generations through time.
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Chapter 23 Solutions
EBK BIOLOGY
- (A) 25 20 20 15 NPP (Mg C/ha/yr) 10 10 5 0 0 2,000 4,000 6,000 ECOLOGY 4e, Figure 20.11 (Part 1) 2017 Sinauer Associates, Inc. Average annual precipitation (mm) 8,000arrow_forwardexplain the cascade of events (starting with relaxing trade winds) that occurs during El Niño in the eastern Pacific (off the coasts of California/North America and Peru/South America) and which lead to food-chain collapse - start with changes in the physical/oceanographic conditions, andthen systematically describe the cascading effects at each level of the food chain -arrow_forward3) Which statement(s) about the Pacific Decadal Oscillation (PDO) is/are TRUE? CIRCLE ALL THAT APPLY. A. It is a major driver of salmon populations in the Pacific B. It affects sea surface temperatures in the eastern Pacific C. Its cycles typically do not last as long as those of ENSO D. Evidence that it has occurred over many centuries has been gathered from tree ring dataarrow_forward
- 4.arrow_forward2arrow_forward1. 2. 3. Marine fish cells are hypotonic compared to their seawater environment; their cells lose water by osmosis and gain solutes. If you add heterotrophic respiration and autotrophic respiration together and then subtract that value from gross primary productivity, then you have a more refined estimate of ecosystem carbon storage than NEE. Differential heating due to the earth's tilt generates the global wind AND oceanic circulation patternsarrow_forward
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