The wear and tear experienced by sediments as they tumble and bounce against one another and against the stream channel is called _______________
Fill in the blank(s) with correct word
attrition
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The Paleozoic–Mesozoic boundary is a major break in the geologic time scale because
a. it is marked by a mass extinction event. b. it is marked by an explosion in the quantity and diversity of life. c. it is when reptiles first appeared. d. it is when mammals first appeared. e. it is a time of great volcanic activity.
Because the barriers to entry into the steel industry are high, the steel industry has generally been
A) competitive. B) oligopolistic. C) a monopoly industry. D) regulated. E) footloose.
The maximum in daytime surface temperature typically occurs ____________________ Earth receives its most intense solar radiation
Fill in the blank with correct word.
The forecasting technique that produces several versions of a forecast model, each beginning with slightly different weather information to reflect errors in the measurements, is called?
a. ?climatology forecasting. b. ?redundancy analysis. c. ?persistence forecasting. d. ?ensemble forecasting. e. ?probability forecasting.