Since 1970 the rate of new discovery of oil that we can tap using available technologies has declined by ________
A) 85% B) 75% C) 55% D) 35% E) 65%
Answer: A
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In the diagram below, the population growth rate begins to decline after reaching the inflection point most likely because
A) a new keystone predator has been introduced to the ecosystem.
B) the ecosystem's limited resources begin to have an impact on the population.
C) the species in the ecosystem evolve from being K-selected to being r-selected.
D) a catastrophic event, such as a flood or earthquake, disrupts the ecosystem.
At which of the following times are surface winds generally strongest and most gusty?
A. just after sunset B. in the early morning C. around midnight D. in the afternoon
Shallow-water offshore wind farms could provide up to 20% of the electricity needs in most coastal
states. Indicate whether the statement is true or false.
We build dams to ________
A) transform watersheds into farms, towns, and recreational areas B) control the spread of water borne diseases C) improve habitat for native fish D) generate electricity, prevent flooding, and provide irrigation and drinking water E) drain wetlands for urban development