Although Traditional Billboards Are the Primary Source of Out-Of-Home Advertising

question 49

Multiple Choice

Although traditional billboards are the primary source of out-of-home advertising revenues-accounting for 66 percent-categories include all of the following EXCEPT:

• A)street furniture.
• B)alternative outdoor.
• C)transit.
• D)stadiums.
• E)gas pumps.

---

Definitions:

Sclereids

Thick-walled, often branched cells found in plants that provide support and deter herbivory.

Guard Cells

Pairs of cells surrounding stomata in plant leaves and stems, regulating gas exchange and water loss by controlling the opening and closing of stomata.

Epidermis

The outermost layer of cells covering an organism, particularly the surface epithelium of the skin or outer layer of leaves and other plant organs.

Parenchyma

A type of living plant tissue consisting of relatively unspecialized cells with thin cell walls that function in photosynthesis, storage, and as the site of many metabolic processes.