major functions:Arteries,Veins,Capillaries
It is easiest to think of the lymphatic system as being, in many ways, analogous to the circulatory system. Both are extensive networks of tubes that go virtually everywhere in the body. But where...
the heart pumps blood trough the body \
heart ,blood,and blood vessels
it carries the oxygen around your body
Mammals have a closed Circulatory system. Parts of the system include a heart and veins. It is complex.
Consequences of the Gold Rush on the California's Water System
Impact of the Water System on the Ecosystem in California
Holding Back the Water from Sacramento
Keeping the Water Clean for Drinking