In the Television Series "Cosmos" the Astronomer Carl Sagan Used

question 48

Multiple Choice

In the television series "Cosmos" the astronomer Carl Sagan used to say,"We are all made of star stuff." What did he mean by that?

• A)All of the chemical elements were formed during the big bang when the universe began,so we are like the stars.
• B)We all have to potential to be stars.
• C)All of the chemical elements in our solar system were forged in an ancient star that went supernova.
• D)The earth has incorporated large amounts of chemical material from the solar wind,so our bodies carry this material.

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Definitions:

Epithelial Tissue

Sheetlike animal tissue that covers outer body surfaces and lines internal tubes and cavities.

Hormonal Control

The regulation of bodily functions by hormones, which are chemicals released into the bloodstream by endocrine glands.

Endocrine System

A collection of glands that produce hormones to regulate processes such as growth, metabolism, and reproduction.

Blood Cell Production

Blood cell production, or hematopoiesis, is the process by which new blood cells are produced in the body, occurring in the bone marrow.