Column 1
dangerous
to go from one side to the other
to learn something
education
to make it better
improve
a long trip
journey
to try harder
effort
the body has millions of these
cells
what we breathe
oxygen
move around a path
circulate
body parts that do jobs
organs
a tube through which liquid travels
vessel
to look at closely
examine
a group of parts that do a job together
system
first step of the digestive system is
mouth
saliva
system that lets us breathe
system that moves blood
circulatory
system that deals with nutrients
digestive
how long is your small intestine
25 feet
carry blood back to your heart
veins
to come out of
emerge
to take care of
tend
to be part of something
involve
large intestine
intestine that carries food
small