What Is the Fourth World Concept

question 1

Multiple Choice

What is the Fourth World concept?

• A) the former Soviet Union and other former communist states
• B) large populations and geographic areas that are irrelevant to the global economy
• C) countries that are even poorer than those placed in the Third World category
• D) countries that used to be considered part of the Third World but have moved up

---

Definitions:

Red Blood Cells

Cells in the blood that carry oxygen from the lungs to all parts of the body and return carbon dioxide to be exhaled.

B-lymphocyte Differentiation

This refers to the process by which B-cells mature and differentiate into cells capable of producing antibodies.

Cellular Immunity

A component of the immune system that involves the activation of immune cells to fight off pathogens, particularly those that reside within cells.

Lymphatic System

A network of tissues and organs that help rid the body of toxins, waste, and other unwanted materials.