The 1991 eruption of Mount Pinatubo in the Philippines ________ global albedo, resulting in a temporary ________ of the Earth
A) decreased; cooling
B) increased; cooling
C) decreased; warming
D) increased; warming
E) decreased; rapid heating
B
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One of the natural services provided free by the Earth is the purification of water. Exactly how does this work? Be sure to explain the role of the energy source and other force that drives this process.
What will be an ideal response?
Which of the following is an example of recycling?
a. collecting and remelting aluminum beer cans and making them into new cans b. cleaning and refilling soft-drink bottles c. selling used clothing at a garage sale d. saving leftovers in a peanut butter jar e. using household water to water a garden
Three seconds after a ball is thrown horizontally from the top of a tall building it has fallen a vertical distance of
A. 30 m. B. 45 m. C. 20 m. D. depends on the initial horizontal speed of the ball
Ecological modeling can help us ________ ecosystem services
A) understand B) create many new C) control the growth of D) replace destroyed E) decrease the cost of maintaining