A Major Factor in the Reduction in the Number of Cases

question 67

Short Answer

A major factor in the reduction in the number of cases of typhoid fever was the introduction of________ and _________ into water purification systems.

---

Definitions:

Aggressively

In a manner showing readiness to attack or confront; characterized by or stemming from aggression.

Functional Play

A form of play primarily observed in children that involves interaction with and manipulation of their environment to learn, explore, and understand the world around them.

Symbolic Play

A type of play in which children use objects or actions to represent or symbolize other objects, actions, or concepts.

Rattle

A noise-making toy intended for babies, designed to engage their auditory senses and develop grasping reflexes.