Rocks and Sand Particles on Beaches Become Rounded Rapidly Because

question 61

Multiple Choice

Rocks and sand particles on beaches become rounded rapidly because _______ .

• A) waves roll loose material up and down the beach, abrading it to produce rounded grains
• B) beach sand is mostly calcium carbonate from reefs and so gets rounded easily
• C) rip currents move the sand offshore rapidly, abrading the fragments
• D) There is nothing particularly prominent in beaches that produces more rounding than other sedimentary processes.

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Definitions:

Average Cost Curve

A graphical representation that shows how the average cost of producing a good varies with the quantity produced, usually U-shaped due to economies and diseconomies of scale.

Joint Production

A process where multiple products are produced together in the same operation, often resulting in by-products.

Economies of Scope

Economies of scope occur when producing a wider variety of goods or services reduces the cost of production due to shared inputs or knowledge.

Scale Economies Index

A measure of the cost advantages that enterprises obtain due to their scale of operation, typically associated with cost per unit of output decreasing with increasing scale.