Possums' coats

This task is about reading text and a diagram to interpret information.
Possum's coats
 
Scientists have found that the percentage of grey-coated and black-coated possums in an area can be related to the annual rainfall of the area. 
 
The percentage of black-coated possums increases by 1% with every 20 mm rise in annual rainfall. 
 
This graphic diagram shows the percentage (%) numbers of black- and grey-coated possums in five different areas.
 

Question

a)  Which area has the greatest rainfall?

    • 1

    • 2

    • 3

    • 4

    • 5

Question 1Change answer

b)  If the annual rainfall in Area 1 is 1400 mm, calculate what would it be in Area 4.
      mm

Question

c)  Differences in a population, like the coat colour differences in possums, are known as 

    • variation

    • individual choice

    • genetic manipulation

    • cloning

Question 1Change answer

d)  In another area, scientists want to know the percentage of grey-coated and black-coated possums.
     Outline a method the scientists could use to find out the percentage of each coat colour for this area.