a. Wind is air moving horizontally.
b. River is a stream of water and detritus flowing through the land.
D. Examples of bad summaries:
a. A lake is a body of water surrounded by land.
b. Mountains are high elevations of land.
c. A divide is the high land which separates two rivers.
d. A river is a stream of water which flows into the sea.
e. Hollow places in the land filled with water are called lakes.
f. A swamp is a tract of land soaked with water.
5. Some Simple Units of Home Geography to indicate Basis of Choice of Topics.