Longleaf pines: The graph in Figure 1.73 gives the height H, in feet, of second-growth longleaf pines for various ages a, in years.33 a. Describe how the height of the trees changes with age. Why is...

Longleaf pines: The graph in Figure 1.73 gives the height H, in feet, of second-growth longleaf pines for various ages a, in years.33

a. Describe how the height of the trees changes with age. Why is this reasonable?

b. What is the tree height for a 60-year-old tree?

c. Is there a limiting value to the height of these trees? Why?

d. Describe the concavity of the graph and explain what it means in practical terms.