Here's a problem to solve: Technological advancements in the logging industry have had both negative and positive effects on forest ecosystems. The most likely negative effect of more efficient logging techniques is

Among the 4 following options, which is the correct answer?

- A: an increase in the time needed for transporting wood.
 
- B: safer work environments for loggers.
 
- C: a change in the chemical and physical makeup of land and water.
 
- D: a decrease in the cost of wood and paper products.
 