Trimming Joists Are Used to Support

question 2

Multiple Choice

Trimming joists are used to support

• A) The common joists
• B) The trimmed joists
• C) The trim joists
• D) The trimmer joists
• E) The header joists

---

Definitions:

Ozone Destroyers

Substances known to cause the degradation of the ozone layer, which protects the Earth from harmful ultraviolet radiation.

UV Radiation

Ultraviolet (UV) radiation is a form of electromagnetic energy emitted by the sun and artificial sources, known for its ability to damage skin and cause cancer.

Ozone Layer

Upper atmospheric layer with a high concentration of ozone (O3) that prevents much ultraviolet radiation from reaching Earth’s surface.

Invasive Species

Non-native species that spread rapidly in new environments, often causing harm to native populations and ecosystems.