38.Describe image

Answer:
The following graph gives information about different species’ upper limbs. The items include human arm, seal limb, bird wing, and bat wing. You can see from this graph that, in human, hand, wrist and fingers are smaller than those in seal limb. You can see from this graph that, in bird wing, radius and ulna are thin and short. You can see from this graph that, in bat wing, humerus is thinner than that in seal limb. You can see from this graph that, in bat wing, there is a wing membrane connecting fingers. In
conclusion, this graph is very informative.

39.Describe image