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

question 2

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 (?) ?

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

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Definitions:

Sublimation

A defense mechanism proposed by Freud, involving the redirection of unacceptable impulses into socially acceptable behaviors or interests.

Oedipus Complex

A psychological theory by Sigmund Freud that describes a child's feelings of desire for the opposite-sex parent and jealousy toward the same-sex parent.

Psychosexual Stage

Stages proposed by Freud detailing the sexual development and maturation process from childhood through adulthood.

Opposite-Sex Parent

A child's parent of the gender different from their own, often discussed in the context of developmental psychology.