Your first exam will be administered as a closed-book closed-notes in-class exam on Tuesday Sept 10
in class. Questions will consist of multiple choice. There will be between 40-50 questions that draw on
information from lectures, videos and any assigned readings on eLC (including the syllabus and email
etiquette instructions). Each student will receive a hard copy of the exam; answers must be entered
via a bubble Scantron form. The forms will be provided, however a #2 pencil and eraser will be
needed. Please note: This guide is not intended to be exhaustive in coverage of materials that will be
on the exam.
This exam covers all material through the lecture on Sept 5. NOTE: We did not cover the last 5 slides of
Lecture 6, which starts with the slide on Integrated Pest Management; these last slides will not be
covered on the exam.
Relevant Textbook Chapters for reference: This list will be updated before each exam to include
textbook chapters that are related to lecture topics. This guide will direct you to where you may find
readings to clarify topics discussed in class; however, you do not need to know all material below. In
other words, if we did not address the topic, concept or term in class, you are not responsible for the
material during an exam. These pages are from the third edition of Environmental Science for a
Changing World.
Introduction & Course Goals: No text reading, but read lecture slides, syllabus and email etiquette
posting.
Population Growth & Limits: Many of the concepts we discussed in class are found on pages 89-96 and
pages 167-185.
Ecosystem Services & Environmental Economics: Pages 227-241 and pages 147-154.
Ecosystem Services/ Food: Pages 348-356 and pages 368-383.
Lecture Topics:
Population Growth & Limits
Terms: Exponential Growth, Population Growth Rate (r), Carrying Capacity (K), Population Age Pyramid
Draw several ways populations can change over time (graphs of N vs. t)
Explain the following equations and define each variable: dN/dt = rN and dN/dt = rN (1-N/k)
What is the primary difference between these two equations? What is the conceptual basis for the
second model?
Explain how the equation for Logistic growth works. What happens to population growth as abundance
increases?
Describe human population growth during the past 150 years, and compare this to human population
growth during the preceding 10,000 years. What were the primary reasons for periods of high human
population growth?
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