Which of the following is true about the history of health inequality? O The biggest increases in developing country life expectancy have been improvements in infant and maternal health O There is more cross-country inequality in life expectancy today than there was in 1990 O Allof these are true about the history of health inequality O A strong and positive correlation between income and life expectancy did not come about until the industrial revolution/British enlightenment

Can immigration help solve the declining of birthrate?

Explain the trade-off between number of offspring and amount of parental investment per offspring. The trade-offs of parenting Parental investment expenditure of time and energy on one offspring Pros: parental investment may inorease the chances of an offspring to sunvive and reproduce w net l e Cons parental in vestmentreduces the parent's abilityb generate additional offspring Parental investmentis a limitedresource Why do males and females have different reproductive strategies? Why do males in many species employ a number-of-offspring strategy while females employ the parental investment strategy? Females are more likely to gain from parental investment: Evolution of sexual reproduction 1. The of tspring they care for have 100% c carrying their genes Divergent selection that favored two alternative reproductive strategies % chance of 2. Their gain from multiple mates is limitedbetter to nvest in parenting than in mating 1. Numberof-ofthoring sategy Individuab whose gametes are good…

For the demographic transition: discuss how Gary Becker's fertility model interacts with Parson Malthus's work.