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
On the slopes of Chimborazo, a 6,310 m high volcanic peak in the Andes Mountains of Ecuador, Alexand
Comet 67P/Churyumov-Gerasimenko from a distance of just 29 kilometres (ESA)
Model of the GABA Receptor–Chloride Channel Molecules in Relationship to Antiseizure Pharmacotherapy
Point Sources of Pollution
ACE, Ca channel blockers
Alpine tundra. Low-growing, hardy plants at a high altitude in Washington’s Cascade range.