what would the curve look like for human populations prior t

  what would the curve look like for human populations prior to modern medicine (which has decreased infant mortality) , and birth control methods ?

W17 Th01 26.pdf Survivorship Curves a 10 -Type I survivorship curve g reflects low offspring numbers 9 10 with high parental investment. (e.g., humans and other large ll mammals) 100 Percentage of maximum life span Type ll survivorship curve reflects an intermediate level in offspring number and parental investment (e.g., squirrels, lizards, annual plants, invertebrates) -Type Ill survivorship curve generally reflects low or no parental investment in offspring. (e.g., oysters, giant squid, fish, most plants

Solution

Type I survivorship curve: this curve look like “convex curve” for human populations prior to modern medicine (which has decreased infant mortality due to low incidence of disease rate), and birth control methods. This curve has illustrating that the increased age-specific survival & its probability of survival in early and middle life followed by fast reduction in survival in later life. This type of survivorship is different to invertebrates that follow high mortality with type II survivorship curves in sponges etc. A majority of human populations do often care for the offspring in providing them adequate nurturing & immune boosting via modern medicine to combat devastating diseases therefore, convex shaped type I survivorships have been attained & natural selection has favored to survive within the the environmen