It Is Difficult to Distinguish Between Colors at Night Because

question 146

Multiple Choice

It is difficult to distinguish between colors at night because __________

• A) we are seeing primarily with the cones.
• B) rods do not adapt to the dark.
• C) we are seeing primarily with the rods.
• D) we are used to seeing mostly with the fovea.

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Definitions:

Tradable Permits

A system where rights to emit pollution or other substances are given a market value and can be bought and sold.

Environmental Protection Agency

A U.S. federal agency responsible for creating and enforcing regulations to protect the environment and public health from pollution and hazardous substances.

Clean Air

The condition of the atmosphere when it is free from pollutants, contaminants, and other harmful substances.

Network Externality

The effect that an additional user of a good or service has on the value of that product to others, often increasing the utility as more people use it.