71.   Auto painting is another major source of pollution in Juarez.

72.   Because of its chemical makeup, concrete is a major source of carbon dioxide releases.

73.   Besides exonerating Compuserve in Germany, he said, the decision eliminated a major source of legal uncertainty for the online industry across Germany.

74.   Booming capital investment by business has been a second major source of economic strength.

75.   Biographies are a major source of pleasure.

76.   A California Highway Patrol spokesman said higher speeds would increase the severity of accidents but would probably not be a major source of new accidents.

77.   A major source of confusion is that marketers are promising savings on different portions of monthly gas bills.

78.   A major source of income for brokerages is commissions on stock transactions.

79.   A major source of the problems were punch-card ballots used in large counties like Miami-Dade and Palm Beach.

80.   A major source of base cations is the breakdown of rocks in soil.