Differences between social classes in the united states are based on

In wealth, income, educational level, occupation.

Explanation:

Most who study the social sciences in the United States agree to say that American society is stratified into social classes. These social classes are defined as the group of groups of individuals that are usually found based on wealth, educational level, occupation, and income. Many Americans agree that it is a three-tier model: high, medium, and low.

what's the question ?

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.