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:

Group Therapy

A form of psychotherapy involving one or more therapists working with several people at the same time, often used to treat individual issues through group interactions and dynamics.

Organic

Pertains to or derived from living matter; in chemistry, it relates to compounds containing carbon.

Family Therapy

A form of psychotherapy that aims to address psychological issues affecting the health and functioning of a family by improving communication and understanding.

Communication

The act of conveying information or expressing ideas and feelings through speech, writing, behavior, or signs.