This Photograph Shows Chert.How Does It Form

question 100

Multiple Choice

This photograph shows chert.How does it form?

• A)evaporation of water in a lake or sea
• B)accumulation of microscopic organisms composed of calcium carbonate
• C)precipitation from seawater early in Earth's history
• D)accumulation of silica-rich organisms or mixing of seawater and groundwater

---

Definitions:

Total Variable Overhead Spending Variance

The difference between the actual variable overhead costs incurred and the expected (budgeted) variable overhead costs based on actual production levels.

Variable Overhead Efficiency Variance

The difference between the standard cost of variable overheads allocated for production and the actual cost incurred.

Supplies Cost

The expense associated with acquiring supplies necessary for the operation of a business, such as office supplies or manufacturing inputs.

Variable Manufacturing Overhead

Indirect manufacturing costs that change in total in direct proportion to changes in production volume, such as utilities or materials.