Which Statement About the Capability of an O-Type Star to Trigger

question 267

Multiple Choice

Which statement about the capability of an O-type star to trigger the formation of other stars is NOT correct?

• A) O-type stars are massive. When they form stellar nebulae, as the Sun did, small stars form instead of planets.
• B) The H II region surrounding an O-type star expands into the giant molecular cloud, producing a shock wave that can compress the un-ionized material and cause it to collapse.
• C) O-type stars are massive and thus have short lifetimes. After an O-type star erupts in a supernova, the material it ejects into space can eventually condense to form a new generation of stars.
• D) The shock wave produced when an O-type star forms a supernova can compress the ISM and cause it to collapse.

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Definitions:

Direct Benefits

Immediate advantages gained by individuals from engaging in certain behaviors, such as increased survival or reproductive success.

Secondary Helpers

Individuals that assist in the care and raising of offspring that are not their own, typically observed in social animal species.

Breeders

Individuals within a population that are of reproductive age and actively participate in mating and producing offspring.

Direct Benefits

Benefits that directly improve the fitness of an individual receiving them, often in the context of mate choice, including improved nutrition, protection, or resources.