Answer:
rivers,lakes and oceans are used in navigation
They are used in hydro-electric power
Explanation:
political map
topographical map
statistical map
Answer:
Magnetite is a black, opaque, magnetic mineral that leaves a black streak when rubbed across a hard rough surface. It is one of the most abundant metal oxides, and its crystal structure contains both the ferrous (Fe+2) and ferric (Fe+3) forms of iron ions.
Explanation: