Lecture+9.ppt - Midterm Exam Preview 40-50 multiple choice...

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Midterm Exam Preview - 40-50 multiple choice questions - no electronic aids - up to and including Oct. 18 lecture
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Content: - anything presented in lecture (e.g. definitions, concepts, graphs, equations, case studies) - no tutorial-only content - no textbook-only content
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What biome is represented in the following climate diagram? a) tropical rainforest, b) desert, c) grassland, d) tropical seasonal forest
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Compared to animals in the Arctic, animals in the tropics have lower critical temperatures that are _____________, and the slope of the increase in metabolic rate below the lower critical temperature is _________. a) lower, steeper, b) higher, steeper, c) lower, shallower, etc…
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Compared to animals in the Arctic, animals in the tropics have lower critical temperatures that are _____________, and the slope of the increase in metabolic rate below the lower critical temperature is _________. a) lower, steeper, b) higher, steeper, c) lower, shallower, etc…
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Energy losses from plant leaves DO NOT occur as a result of ___________. a) conduction b) solar radiation, c) convection, d) evapotranspiration
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Energy losses from plant leaves DO NOT occur as a result of ___________. a) conduction b) solar radiation, c) convection, d) evapotranspiration
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23 butterflies are captured and marked. Later, 15 butterflies are captured, 4 of them marked. What is the estimated total population size? a) 24 b) 56 c) 86 d) 112 86 4 / ) 15 23 ( N
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In the experiment illustrated below, the combined effects of the treatments were: a) additive b) non-additive c) inconclusive d) random
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Population Growth and Regulation
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Human Population Growth: A Case Study Humans have a large impact on the global environment: Our population has grown explosively, along with our use of energy and resources.
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Human population reached 7.1 billion in 2013, more than double the number of people in 1960. Our use of energy and resources has grown even more rapidly. From 1860 to 1991, human population quadrupled in size, and energy consumption increased 93-fold. For thousands of years our population grew relatively slowly, reaching 1 billion for the first time in 1825. Now we are adding 1 billion people every 13 years.
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Figure 9.2 Explosive Growth of the Human Population
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Figure 9.21 World Population Growth Rates Are Dropping Growth rate has slowed recently, to about 1.18% per year, and continues to slow.
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By 2050, it is predicted there will be roughly 9–10 billion people on Earth.
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Is 10 billion above the carrying capacity of the human population? Many people have tried to estimate human carrying capacity. Researchers must make assumptions about how people would live and how technology would influence our future.
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