Question

what are the two main ways to study the organization of the body?
levels of organization and body systems
cells and tissues
levels chemical and molecular organization
organs and organ systems

Explanation:

The two main ways to study body organization are by looking at the levels of organization (from atoms to the whole - organism level) and by examining body systems (such as the circulatory, respiratory systems etc.). Cells and tissues are part of the levels of organization, chemical and molecular organization is a lower - level aspect within the levels of organization, and organs and organ systems are also part of the overall body organization but not the two main overarching ways of study.

Answer:

levels of organization and body systems