If you were to draw two graphs indicating the predicted changes in net primary productivity (NPP) for 1) North America and 2) South America with continued global warming, how would they compare? Your graphs should have time (decades) on the x-axis, starting in, and average NPP on the y-axis. Both of the graphs, for North America and South America, would show average NPP increasing slightly through time. The relationship of NPP and predicted warmer temperatures is so variable that graphs for both North and South America will not have a clear relationship between time and NPP. Both of the graphs, for North America and South America, would show average NPP declining through time. The graph for North America would show average NPP increasing slightly through time, while the graph of South America would show a decline in NPP through time