Which of the following properly states the relationship between global temperature and global CO2 levels?
a. in the past 500 years, the temperature has increased rapidly, along with increases in carbon dioxide levels
b. in the past 500 years, the temperature has increased rapidly, along with decreases in carbon dioxide levels
c. in the past 140 years, the temperature has increased rapidly, along with rises in carbon dioxide levels
d. in the past 140 years, the temperature has increase rapidly, along with decreases in carbon dioxide levels
e. in the past 140 years, the temperature has decreased rapidly, along with decreases in carbon dioxide levels
Answer: c. in the past 140 years, the temperature has increased rapidly, along with rises in carbon dioxide levels
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Planar molecules used as chemical mutagens are called
A. nitrous oxide. B. base analogs. C. alkylating agents. D. intercalating agents.
A college student has a new job, and must balance classes and commute times to work. The student takes two weeks to drive from campus to the workplace by several routes, including a direct route through town, a highway route, and a route through a city park. Comparing the drive times, affected by the route, speed limits, and intersections is possible. The dependent variable is the
A. average time in minutes it takes to drive from campus to workplace. B. the number of cars in the same route. C. the type of vehicle the student is driving. D. the time in minutes between walking from class to their vehicle. E. distance in miles of each possible driving route from campus to workplace.
A symbiotic association between a fungus and a green alga or a cyanobacterium is called a
A. protist. B. mycorrhiza. C. mushroom. D. kelp. E. lichen.
Which of the following is NOT a principle used when constructing cladograms?
A. Each cladogram branch point should have one or more shared derived characters that are common to all species above the branch point, unless the character is later modified. B. All species or higher taxa are placed on tips in a phylogenetic tree. C. All shared derived characters appear together only once in a cladogram unless they arose independently during evolution more than once. D. All species or higher taxa are placed on nodes in a phylogenetic tree.