Q1. Omega Systems, Inc., contracts with Petro Oil Corporation to build special pipe and install it in Petro's refinery. There is no separate price in the contract for the installation. This contract is?
Q2. Human population doesn't follow a j-shaped curve since humans are able to consciously limit the number of offspring that they produce, which is what usually happens after a population industrializes. [As a result, the best way to deal with human population growth is to increase standards of living so that the demographic transition can occur.]