What Is an Emission Nebula, Also Known as an H

question 219

Multiple Choice

What is an emission nebula, also known as an H II region?

• A) region of ionized hydrogen around one or more hot O- and B-type stars
• B) region of molecular hydrogen inside a giant molecular cloud
• C) region of neutral, atomic hydrogen in interstellar space
• D) region of gas and dust formed by the explosion of a massive star

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Definitions:

Guppies

Small freshwater fish species, often used in aquariums, known for their vibrant colors and prolific breeding.

Predation

The preying of one animal on others, a biological interaction where a predator feeds on its prey.

Cichlids

A diverse family of freshwater fish known for their complex behaviors and varied colors and shapes.

Killifish

Small, colorful freshwater fish belonging to the family Cyprinodontiformes, known for their diverse habitats and as model organisms in scientific research.