Removal of which of the following species will result in the greatest changes in an ecological system?
A) a carnivore species
B) a keystone species
C) a decomposer species
D) a producer species
E) a competitive species
Answer: B
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Using a refillable beverage container (returnable bottles) would be an example of ________ materials.
A. Redefining B. Reusing C. Reducing D. Recycling E. None of these is correct
Nearly all beach sand is quartz. Indicate whether the statement is true or false
The process by which natural vegetation at a particular location develops in a sequence of stages involving different plant communities is known as ____
a. evolution b. regression c. natural selection d. succession
Advective fogs form when warm, moist air moves over a cool surface so this type of fog is likely to be common in ________
A) the eastern coast of the U.S. where the ocean water is usually warmer than the air B) the western coast of the U.S. where the ocean water is usually cooler than the air C) cities where moisture is added to the air by watering systems D) desert areas near water where air is heated during the day and then the ground cools quickly