The cell 'burns' or breaks the chemical bonds of glucose to release energy to do work in a cell
The first sentence is true
The drift explanation states that the people with higher socio-economic status (SES) tend to have better lives. It further states that genetics and biology plays an important role in the socio-economic status so that healthier people can enjoy their SES for longer period of time.
There have been sharp increase in birth to unmarried mothers in all the countries except in JAPAN. Recent research study on global children trend indicate that, the country where children are most likely to be reared by married parents is Japan, where giving birth to children out of wedlock is rare. The country also exhibit high marriage rate and cohabitation is rare.
Speciation is not a mechanism of microevolution.