Why Is a Bird-Foot Delta Like That of the Present-Day

question 40

Multiple Choice

Why is a bird-foot delta like that of the present-day Mississippi below New Orleans likely to change naturally toward one with the shape of an equilateral triangle like the upper-case Greek letter delta (̇Δ) ?

• A) Increased sediment loads since the mid-19th century have caused the major distributaries to be filled with sand.
• B) Present-day distributaries have higher gradients than potential new ones.
• C) Potential, new, distributary channels have higher gradients, causing downcutting of the existing channels.
• D) Potential, new, major distributary channels have steeper gradients than existing channels.

---

Definitions:

Long-Lived Assets

Assets that provide economic benefits to a business for more than one fiscal year, such as buildings, machinery, and equipment.

Architect

A professional who designs buildings and in many cases also supervises their construction.

Accumulated Depreciation

This is the cumulative depreciation of an asset up to a single point in its life, reflecting how much of the asset's value has been used up over time.

Disposal Of Asset

Refers to the process of eliminating a fixed asset from the balance sheet due to sale, exchange, retirement, or loss.