Create a summary of The Story of Great Inventions by placing the four most important points in the correct order. Submarines either rise or submerge
by displacing water.
Some submarines are used for
oceanic exploration.
Sometimes, submarines can be seen
from an airplane.
Certain submarines have a special
chamber for divers.
All submarines must be sure not to
descend too far underwater.
Most submarines are created solely
for military purposes.