The Presence of 180-Million-Year-Old Salt Domes in the Gulf Coast

question 35

Multiple Choice

The presence of 180-million-year-old salt domes in the Gulf Coast region of the United States indicates that

• A)the area was once volcanically active.
• B)the area was subjected to plate collisions which caused metamorphism to occur.
• C)subsidence is now occurring due to the withdrawal of magma from the region.
• D)a sea used to cover the area but subsequently evaporated.
• E)the Mississippi River used to carry salt water.

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Definitions:

Inhibin

A hormone involved in the regulation of the reproductive system, notably in inhibiting the production of follicle-stimulating hormone.

Estrogen

A group of steroid hormones which promote the development and maintenance of female characteristics of the body.

Follistatin

A protein involved in muscle growth, reproduction, and the regulation of certain hormones.

Progesterone

A hormone produced by the ovaries involved in the menstrual cycle and pregnancy.