On the Scale of the Cosmic Calendar,in Which the History

question 45

Multiple Choice

On the scale of the cosmic calendar,in which the history of the universe is compressed to 1 year,how long has human civilization (i.e. ,since ancient Egypt) existed?

• A)about half the year
• B)about a month
• C)a few hours
• D)a few seconds
• E)less than a millionth of a second

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Definitions:

Subsidy

A financial contribution granted by the government or a public body to help an industry or business keep the price of a commodity or service low.

Marginal Costs

The increase in cost resulting from the manufacture of one additional unit of a good or service.

Decreasing Costs

Situations in which costs diminish as the level of production or scale of operations increases.

Efficiency

The extent to which time, effort, or cost is well-used for the intended task or purpose.