The directed expenditure of energy.
The rate of production of goods
Ozone hole allowed to make many important decision. Main was to limit the production of CFC's.
The main factor influencing production is consumer demand.
The main cause to the start of the great depression was the Wall Street Crash in 1929.
Grain was the main one. =D
The main industry is production of coins
Tourism is the 'main cause' of visits to Antarctica.
The main cause of change at puberty are started by the production of our hormones(testosterone for boys and the estrogen and progesterone for girls)
fish production
The 3 main purposes of cattle are dairy production, beef and leather
the main cause is that they run out of resources.
Not usually, no.