A hungry bat flying at 340 m/s senses an echo 1 s after a chirp. The distance to its lunch is
A. more than 340 m.
B. 85 m.
C. 170 m.
D. 340 m.
Answer: C
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Indicate whether the statement is true or false.
In winter, Mount Rainier is ____
a. ?at equal risk of landslides as compared to summer time b. ?less at risk of landslides, as snow increases pressure on frozen water in rock fissures c. ?less at risk of landslides, as snow lowers magma temperature d. ?more at risk of landslides due to higher earthquake frequency e. ?more at risk of catastrophic landslides due to the weight of snow and freezing water in rock fissures
A scale of 1:24,000 is regarded as
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The large number of indigenous languages and customs, especially in the southern parts of Mexico, further emphasize __________.
a. cultural uniformity b. idigenismo c. traits of avant-garde society d. cultural diversity e. a stratified economy