Answer:
C
Explanation:
A and D don't detail how the air smelt
B is talking about life in the campground while C is talking about the nature around the campground (on the mountain presumably)
The Tipping Point by Malcolm Gladwell is a book about how small actions at the right time, in the right place, and with the right people can create a "tipping point" for anything from a product to an idea to a trend. Gladwell is not a sociologist, but he relies on sociological studies, and those from other disciplines within the social sciences to write articles and books that both the general public and social scientists find fascinating and worthwhile. According to Gladwell, the "tipping point" is "that magic moment when an idea, trend, or social behavior crosses a threshold, tips, and spreads like wildfire."
According to Gladwell, there are three variables that determine whether and when the tipping point for a product, idea, or phenomenon will be achieved: The Law of the Few, the Stickiness Factor, and the Power of Context.
Answer:
Wind, water, tide and muscle - both animal and human - provided sources of energy that are still available to man and are still used to power simple machines in many parts of the world today.