The Silica Tetrahedron That Forms the Backbone of All the Silicate

question 14

Multiple Choice

The silica tetrahedron that forms the backbone of all the silicate minerals is composed of silicon and what other element?

• A)magnesium
• B)oxygen
• C)iron
• D)carbon

---

Definitions:

Cross Town Tollway

A toll road designed to facilitate quicker transportation across a town or city, often requiring payment for use.

Rush Hour

A period during the day when traffic congestion is at its highest, often due to people commuting to or from work.

Willingness-to-pay

The maximum amount an individual is ready to spend to procure a good or service, reflecting its perceived value.

Two-part Tariff

A pricing mechanism that consists of a fixed fee plus a variable charge for every unit of the good or service consumed.