What does the typical mixture of air on earth composed of

Which factor best suggests a cause for the urban problems shown in this table? (3 points) increasing discriminatory housing practices shifting population density gradients over time declining urban renewal efforts by city governments declining basic employment sector in industrial cities increasing gentrification efforts in the inner cities

During the era of european expansion, what was the biggest reason for spain’s push for exploration?

In what was the 1851 indian appropriations act considered a peace plan according to the federal government