What event triggered the main eruption of mount st. helens may 1980? multiple choice melting snow caused a huge steam eruption. magma encountered groundwater and exploded. a landslide removed rocks and released pressure on the magma. all of these?

as a camel goes without food, its hump begins to shrink. its fur prevents the camel from sweating too much.camels store fat in their humps, not water.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.