The Ediacaran fauna are some of the best, most beautifully preserved fossils of the Proterozoic. What is so special about these fossils?
A. They are the undisputed oldest multi-cellular eukaryotic organisms found to date.
B. They are the undoubted oldest animal fossils found to date.
C. Both of the above answers are true for the Ediacaran fossils.
D. Neither are true, the Ediacaran fossils represent the oldest fossil coral found to date.
Ans: C. Both of the above answers are true for the Ediacaran fossils.
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Of the following tools of the geographer, which is most commonly used?
A) computer simulations B) surveys C) lab experiments D) maps
Larger species of fish are not recommended for pregnant women due to high levels of iron
Indicate whether the statement is true or false
You are a herder on the commons. You go out counting sheep one day and you come to suspect that your neighbor, who also has rights to graze on the commons, has recently added some extra sheep to his flock. You are a well-read shepherd, and you worry that these extra sheep could easily lead to what Garrett Hardin calls the “tragedy of the commons.” Drawing upon the theories presented in your readings and lecture, explain what you might do to prevent this tragedy from occurring.
What will be an ideal response?
Regulating and cultural services provided by natural ecosystems
A) typically have the highest economic value of any components of ecosystems. B) are public goods usually provided by markets. C) include goods such as fresh water, wild foods, and livestock. D) are essential but more difficult to value in monetary terms.