A dependency ratio is a comparison between the numbers of
A. Working and nonworking people
B. Parents and children
C. Old people and young people
D. Middle aged people and infants
E. Young infants and older adults
Answer: A
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Which of the following biomes tends to be dominated by coniferous trees?
A) Tropical moist broadleaf forest B) Boreal forest C) Temperate broadleaf forest D) Mediterranean forest
Most human activities tend to reduce flood hazards, so the frequency of floods of a given size has been decreasing for nearly all streams.
Answer the following statement true (T) or false (F)
During the Early Jurassic, the western margin of North America was the boundary of a rift zone. Indicate whether the statement is true or false
The longer the wavelength is on a wave, the slower the wave energy moves through the water
Indicate whether the statement is true or false