Acity is located along the coastline of a peninsula at 25° latitude in the southern hemisphere. the land on which the city is built is primarily flat with karst topography. in recent years, scientists have detected a significant decrease in the amount of ozone in the stratosphere above the region. describe the effect of latitude on the amount of sunlight the region receives. describe how solar intensity will most likely affect the region’s average temperature during the summer and winter months. what kind of convection cell would be found over a region at this latitude? describe one way in which this cell affects the movement of air through the region in which the city is located and one way in which this mass movement of air likely affects the region’s climate. describe two ways in which the region’s topography is likely to affect its climate. describe two ways that the recent decrease in stratospheric ozone poses potential risks to people living in the city

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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