Where likely sources of debris flows are a short distance upstream and the channel gradient is high, ____.
a. a trip wire is more effective than an acoustic flow meter for debris flow warnings
b. sirens should not be used in debris early warning systems
c. warning time for a debris flow may be too short to allow for evacuation
d. the danger to humans from a debris flow is minimized
e. debris flows and mudflows will never be covered by flood insurance
Question 2
Levees are ____.
a. less susceptible to failure when built from local materials
b. an alternative to spillways for protection of structures from floods
c. always artificial, not natural
d. sometime intentionally breached during floods
e. reinforced by piping and sand boils
A very high-resolution texture of the planet Mars
The “Infertility Belt” In certain countries in Central Africa, infertility rates are as high as 30%
Sources of Trans Fat in the Diet
Hormones acting through the brain help regulate metabolism and short- and long-term appetite.
Multigroove adjustable pliers are known by many names, including the trade name Channel Locks®.
High stress, by household type (age-standardized), age 18+, Canada, 1994-1995