For most of human history, and in developing countries today, the ...

[formula1]

For most of human history, and in developing countries today, the major source of energy has been
 
  A) natural gas.
  B) oil.
  C) wind.
  D) muscle power.

Question 2

The concept of sustainability requires that
 
  A) economic growth does not exceed the renewal of natural capital.
  B) all sources of energy used in an economy must come from the sun.
  C) global economic systems are based on the harvesting of natural products.
  D) economies use equal portions of land, labor, and capital.

[stanleka1]

Answer to Question 1

D

Answer to Question 2

A

[formula1]

TYSM

[brbarasa]

Gracias!