The Central "Engine" of an Active Galaxy Appears to Be

question 104

Multiple Choice

The central "engine" of an active galaxy appears to be

• A) stars falling into a supermassive black hole, then their remnants being thrown out in all directions.
• B) supernova explosions in an extremely dense star cluster at the center of the galaxy.
• C) the violent merger of two galaxies in which the collision throws out jets of matter along the rotation axis of the larger galaxy.
• D) a supermassive black hole at the center of an accretion disk and material being projected out perpendicular to the disk in both directions.

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Definitions:

Push and Pull Strategy

Marketing techniques where a "push" strategy is used to take the product to the consumer (via distribution channels), and a "pull" strategy motivates consumers to actively seek out the product.

Supply Chain Strategy

The planning and management approach to sourcing, procuring, producing, and distributing goods or services to end users.

Multimodal Transportation

The use of two or more modes of transport to move goods from origin to destination, optimizing costs and efficiency.

Cross-border Trade

Trade that occurs when goods or services are exchanged across national borders.