What Observations of the Martian Surface Led Lowell to the Conclusion

question 180

Multiple Choice

What observations of the Martian surface led Lowell to the conclusion that intelligent life-forms existed on Mars?

• A) melting icecaps, a network of linear features that look like canals, and varying dark surface markings assumed to be vegetation
• B) geometrical structures and patterns that are apparently the remains of buildings and cities
• C) sculpted mountains in the shape of humanoid heads, obviously carved to announce the presence of intelligent life to distant observers
• D) lakes and rivers of water flowing from polar ice caps and detected by strong specular reflection of sunlight

---

Definitions:

Limbic System

The limbic system is a complex set of structures in the brain involved in emotion, behavior, and memory processing.

Chemical Sense

Refers to the sensory systems that allow organisms to perceive the chemical composition of their environment, primarily taste and smell.

Taste

The sensation produced when a substance in the mouth reacts chemically with taste receptor cells located on taste buds.

Kinesthesia

Our movement sense—our system for sensing the position and movement of individual body parts.