Sinkholes can grow in area and merge over time to form larger karst depressions called _____
a. speleothems
b. geysers
c. aquicludes
d. uvalas
e. water mines
d
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Power is the
A. time rate of doing work. B. rate at which energy changes forms. C. both of these D. none of the above
If the recurrence interval of an event is 50 years, recurring events ____.?
a. ?will occur exactly every 50 years b. ?will never occur within a one year time period c. ?can occur anytime, but are likely to occur within 50 years d. ?will never occur if there has not been an event for 50 years e. ?will only occur once during any given individual's lifetime
Most tornadoes occur ________ during ________
a. in the afternoon, spring b. in the early morning, summer c. in the afternoon, fall d. late at night, spring
The biosphere consists of the ________
A) sum of all the planet's living organisms and the abiotic portions of the environment with which they interact B) abiotic portions of the environment C) solid earth beneath our feet, plus the air we breathe D) saltwater and fresh water in surface bodies and the atmosphere E) air surrounding our planet, plus the water we drink