Question

model 2: survivorship curves

1. what does the x - axis on the graph represent?
2. which type of organism shows a steady decline at all life stages?
3. which type of organism loses most of their individuals at an early life stage?
4. what survivor type are humans?

Explanation:

• For question 6: The x - axis labels are "Newborn", "Pre - reproductive age", "Reproductive age", "Post - reproductive age", which are different life stages.
• For question 7: Type II (Rodents) has a straight - line decline on the semi - logarithmic scale, indicating a steady decline at all life stages.
• For question 8: Type III (Fish, insects, amphibians) has a sharp decline in the "Newborn" and "Pre - reproductive age" stages.
• For question 9: The graph labels Type I as "Human".

Answer:

1. Life stages.
2. Type II (Rodents).
3. Type III (Fish, insects, amphibians).
4. Type I.