A Value of N = 0

question 25

Multiple Choice

A value of N = 0.1 for the Drake equation signifies that:

• A) one out of every 10 solar systems in our galaxy harbors intelligent life
• B) one out of every 10 solar systems in our galaxy harbors life of some kind
• C) one out of every 10 galaxies in our universe harbors intelligent life
• D) one out of every 10 galaxies in our universe harbors life of some kind
• E) approximately one intelligent civilization in the universe is created every 10 billion years.

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Definitions:

Set Points

Theoretical levels at which an individual's physiological or behavioral systems tend to stabilize, regulated by homeostatic processes.

Stomach's Contents

The mixture of food, liquids, digestive juices, and enzymes present in the stomach during the process of digestion.

Cessation of Eating

The process of stopping or ceasing food intake or consumption.

Leptin

A chemical produced by the adipose cells that seems to signal that plenty of fat is stored and that no more fat is needed. This signal may diminish eating.