Anyone on here from Virginia?

As our current atmosphere formed, the concentrations of various atmospheric gases fluctuated. match each gas with the explanation that best describes how its proportion changed during the evolution of the atmosphere.

From the examples below, choose the best examples of industries in african countries and their influence on economic development. select all that accurately represent african economies and factors of production. because agriculture remains central to the success of the mali's economy, any change to climate (such as drought) or price of crops significantly affect the country as whole. the thriving manufacturing industry in chad's northern region sustains the country's economy as a whole. egypt's manufacturing and export of cotton is the primary focus of the economy in the country. morocco serves as a representative of service industries in africa with a growing tourism market.

What were the death camps? who was sent there?