In the Section "Investigating Life: Genetic Messages from Ancient Ecosystems

question 20

Multiple Choice

In the section "Investigating Life: Genetic Messages from Ancient Ecosystems," what was the advantage of looking for DNA samples in permafrost?

• A)Most plants and animals evolved in SiberiA.
• B)It is easier to take solid core samples.
• C)The enzymes that make DNA are still active in the cells.
• D)The freezing temperatures preserve the DNA.
• E)Areas with permafrost are older than other parts of the world,allowing scientists to collect samples back 1.5 to 2 million years.

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Definitions:

Horizontal Equity

The principle that individuals with similar financial situations should be treated equally by the taxation system.

Egalitarian

Pertaining to or believing in the principle that all people are equal and deserve equal rights and opportunities.

Benefits Principle

The benefits principle is a taxation theory that argues taxes should be levied on individuals according to the benefits they receive from government services.

Public Education

A universally accessible system funded and administered by government agencies aiming to provide free education to all children.