Astronomers Discover a Large Number of Herbig-Haro Objects Arranged Along

question 23

Multiple Choice

Astronomers discover a large number of Herbig-Haro objects arranged along two perpendicular lines centered on an obscured area of the sky,as shown in the figure below.That area most likely contains a:

• A) supermassive black hole.
• B) pair of supermassive black holes.
• C) protostar.
• D) pair of protostars.

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Definitions:

Prop Roots

Thickened roots that grow above ground from the lower part of a stem, providing additional support to plants, typically seen in species like mangroves and corn.

Monocots

A group of flowering plants (monocotyledons) with a single seed leaf, including grasses, lilies, and orchids, characterized by various structural features such as parallel leaf venation.

Rhizobia

Soil bacteria that fix nitrogen after becoming established inside root nodules of legumes.

Infection Threads

Filamentous structures formed by certain bacteria during the infection process of plant roots, facilitating microbial entry.