Most of the Mass of the Milky Way Seems to Exist

question 22

Multiple Choice

Most of the mass of the Milky Way seems to exist in the form of

• A) the black hole in the Galactic Center.
• B) dark matter out in the Halo.
• C) hydrogen gas in the disk and spiral arms.
• D) population II stars in the Halo.
• E) population I stars in the disk.

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Definitions:

Vascular Tissue

The complex tissue in plants responsible for conducting water, minerals, and nutrients throughout the plant.

Ferns

are a group of plant species that reproduce via spores and have neither seeds nor flowers, characterized by large, divided leaves.

Megaspore

A type of spore that is larger in size, produced by certain plants, that develops into a female gametophyte.

Mature Female

Typically refers to an adult female organism that has reached reproductive age or capability.