Surface currents are driven by:
a. interaction between the sea surface and the wind
b. temperature gradient
c. contrasts in water density
d. the vertical upwelling and downwelling of seawater
Ans: a. interaction between the sea surface and the wind
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Humans are characterized by
A. Type I survivorship. B. Type II survivorship. C. Type III survivorship. D. none of the above
The total amount of carbon in the atmosphere increases by about 8.1 gigatons (Gt) of carbon per year
Indicate whether the statement is true or false.
Which of the following best defines energy efficiency?
A. the minimum standard for new appliances. B. measures how much of the original energy goes to its intended purpose. C. compares the amount of fossil fuel to renewable energy usage. D. the goal for modern society as we transition away from our dependence on fossil fuels. E. measures the reduction in energy usage for a given application.
The Happy Planet Index assesses nations in various regions of the world for "sustainable well-being" by measuring the happy life years of citizens and the ecological footprint made by their resource consumption. Find the nation on the graph whose citizens experience about 43 happy life years and have an ecological footprint of over 6 hectares per capita. Which region is this nation found in?
a. East Asia b. Middle East c. Latin America d. Western world