A hanging valley:
a. is a stream valleys that was adjacent to glaciers, but was itself never glaciated.
b. marks where a glacier extended below sea level.
c. blocked the flow of one or more glaciers.
d. contained a tributary glacier.
e. is a glaciated valley that was later uplifted by tectonic forces.
D
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What percentage of species do scientists predict we will drive to extinction by the year 2100?
A. 25-50% B. 5-10% C. 0% D. 75-100%
Define orogenesis
What will be an ideal response?
When the quantity of environmental protection is low so that pollution is extensive, then there are usually ______________ to reduce pollution and the ______________ .
A. a few inexpensive and easy ways; average benefit are slightly higher B. a lot of expensive and innovative methods; marginal benefits are quite high C. only a few expensive and innovative methods; average benefits are higher D. a lot of cheap and easy ways; marginal benefits of doing so are quite high
Chile's stable government and the growing economy have successfully__________.
Fill in the blank(s) with the appropriate word(s).