Where in the Universe Would One Look for a Rille

question 298

Multiple Choice

Where in the universe would one look for a rille?

• A) on Mars because rilles are the "canals" seen by Lowell to extend across the planet surface
• B) in the galactic plane because it is a dark dust band
• C) in Saturn's rings because rilles are the gaps in the rings
• D) on the Moon because it is the name given to a deep winding canyon there

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Definitions:

User Costs

Expenses related to the use of a product or service, including maintenance, operation, and depreciation.

Property Rights

The legal rights to use, control, and dispose of property and resources.

Forest Cover

The proportion of land area covered by forests, which plays a critical role in carbon sequestration and biodiversity.

Deforestation

The clearing or thinning of forests by humans, often to make land available for agriculture, logging, or urban development.