Evolutionary Bias describes how less evolved species (from their origins in the carboniferous period) are thriving while more evolve metabolic systems suffer. Ragweed, poison ivy, kudzu and bedbugs are zooming along. Hardwood trees and hard grains are suffering along with bees and bats. Increased CO2 favors the metabolism most akin to earlier earth environments of higher CO2 levels. This is seen in the oceans with the invertebrates thriving and vertebrates decreasing. Evolutionary bias can be seen within the cells as the ratio of carbohydrates to protein has decreased causing cereal manufacturers to alter their manufacturing processes to account for less of the more evolved metabolic molecule. (2003) Rising CO2 levels increase the impact of mosquitos, bedbugs and viruses: Zika!

Ontogeny Recapitulates Phylogeny describes how an individual (ontogeny) develops from a simple egg to a complex being that reflects the specie's evolutionary journey (phylogeny). In a human's uterous development, it goes through the less evolved stages of specie's development. Evolutionary bias shows up as faster development of the earlier stages with a lower final maturation level. One can see this in one's garden as plants mature faster but yield less. Or, one can see in the earlier onset of human puberty with a lowering of final maturation. Yes, this may be one of the answers for earlier puberty.