Which two events proved that middle eastern nations could threaten the world’s oil supply? 1. the closing of the suez canal by egypt in 1956 2. the opec oil embargo in 1973 3. the discovery of an oil reserve in iran in 1911 4. the founding of the first commercial oil rig in poland in 1853 5. the discovery of an oil reserve in iraq in 1914

People keep spending additional units of a particular resource on a want until their marginal benefit is  decreasing withgreater thanless thannot affected by  their marginal cost.

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

Select the correct answer.look at this nineteenth-century illustration of london. which explanation best relates this illustration to changes in britain in the 1800s? a.factory workers in cities lost their livelihood because of the lack of housingb.industrialization narrowed the inccome gap between landowners and workers.c.the migration of workers from rural to urban areas resulted in overcrowded citiesd.the spread of railways allowed farmers to sell produce far from where it was grown.