Which of the Following Statements About Porosity Is NOT Valid

question 43

Multiple Choice

Which of the following statements about porosity is NOT valid?

• A) the amount of water that can be stored depends on the porosity
• B) porosity partly depends on size and shape of grains and clasts
• C) better sorted sediments have more porosity than unsorted ones
• D) fractures may be the only real porosity in some igneous rocks
• E) all of these are valid

---

Definitions:

Gas Exchange

The biological process by which organisms exchange oxygen and carbon dioxide with their environment, crucial for respiration.

Atmospheric Air

The layer of gases surrounding the Earth, primarily composed of nitrogen and oxygen, which is essential for respiration.

Asthmatic Attack

A sudden worsening of asthma symptoms caused by the tightening of muscles around the airways, leading to difficulty breathing, coughing, and wheezing.

Ventilation

The process of moving air in and out of the lungs, facilitating the exchange of oxygen and carbon dioxide between the body and the environment.