The Explosion of a Supernova Typically Leaves Behind

question 4

Multiple Choice

The explosion of a supernova typically leaves behind

• A) a planetary nebula.
• B) a shell of hot,expanding gas with a white dwarf at the center.
• C) a shell of hot,expanding gas with a pulsar at the center.
• D) nothing is ever left behind.

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Definitions:

Pheromones

Chemical substances produced and released into the environment by animals, affecting the behavior or physiology of others of the same species.

Noncompensatory Model

A decision-making approach where no trade-offs are allowed; that is, a poor score in one criterion cannot be offset by a high score in another.

Algorithm

A step-by-step procedure or set of rules designed to solve a problem or perform a specific task.

Heuristic

A problem-solving approach that employs a practical method or various shortcuts to produce solutions that are not guaranteed to be optimal, but sufficient for the immediate goals.