3 Which of the following is true?
a. There are 3 causes related to slope angles.
b. There are 3 causes related to avalanches.
c. Avalanches only occur after it’s been snowing for weeks.
d. Different kinds of skiers cause different avalanches.
4 Why are there no avalanches on slopes over 60 degrees?
a. Snow melts faster on extreme slopes.
b. The snow will constantly slide off the slope.
c. It is easy for the base layer of snow to stick on steep slopes.
d. Temperatures are too warm on steep slopes to form an icy layer.