To ensure proper protection for food during storage the bottom shelf should be at least 3 inches - 3 feet above the ground. This is to protect the food from pests and other organisms that may cause disease and health-problems to people who are going to consume such produce. It is a common practice done in the past and have evolved in the process of manufacturing these days.
Nicotine can be found in cigarettes and comes from tabacco
DO NOT SMOKE PEOPLE
I REPEAT DO NOT SMOKE
The answer would be abstinence because you’re abstaining from doing.... it
