How Do Ray-Finned Fish Keep from Sinking

question 138

Multiple Choice

How do ray-finned fish keep from sinking?

• A) they are constantly swimming
• B) they don't constantly swim but their fins are constantly moving
• C) they have lungs that are always filled with air
• D) they have a swim bladder that is filled with gas
• E) they have a skeleton that is less dense than the surrounding water

---

Definitions:

Rosenstock's and Becker's

Theorists associated with the Health Belief Model, which posits that a person's belief in a personal threat of an illness or disease together with a person's belief in the effectiveness of the recommended health behavior can predict health-related behaviors.

Health Belief Model

A psychological model that explains and predicts health behaviors by focusing on the attitudes and beliefs of individuals about health conditions.

Sociopsychological Variable

A factor that combines social and psychological influences affecting an individual's behavior and attitudes.

Lalonde Report

A seminal Canadian document from 1974 that proposed the concept of "health field," emphasizing the impact of lifestyle, environment, human biology, and health care organization on health.