>>10295157r-selected mating strategy versus K-selected. Blacks are r-selected, while every other race is K-selected. Pure blacks (no admixture with other races, i.e. the sub-Saharan African natives) are also on average 30 IQ points below every other race. They also can't get blood transfusions from anyone that isn't black. Here's the Red Cross page where they try to explain it away. "It's not really because they black... But it's because they're black."
