What is a survivor-ship curve?
A - A scientific analysis on the highest cause of death among various species
B - A graph that measures the proportion of human life span related to geographical location
C - A scientific analysis of the likelihood of death in various species
D - A graph that measures the proportion of individuals in a given species that are alive at different ages
Answer: D - A graph that measures the proportion of individuals in a given species that are alive at different ages.