Describe some of the difficulties people have in making good ...

[stephzh]

Describe some of the difficulties people have in making good longterm predictions.
 
  What will be an ideal response?

Question 2

It takes fewer and fewer workers to produce crops in developed countries because of substitution of machines that ultimately run on fossil fuel for hand labor.
 
  What will be an ideal response?

[Sarahjh]

Answer to Question 1

Is the growth linear or exponential? Could it be logistic?

Answer to Question 2

That is the casethe use of mechanical aids has replaced human labor. According
to the book, Figure 24.9, there is a ratio of 10 to 1 of energy output to input. Richard
Manning in Harper's Magazine from February 2004 wrote, in concurrence, A two-pound
bag of breakfast cereal burns the energy of a half-gallon of gasoline in its making. All
together the food-processing industry in the United States uses about ten calories of fossil
fuel energy for every calorie of food energy it produces.

[stephzh]

Both answers were spot on, thank you once again

[Sarahjh]

Great! Please up vote