Large groups of galaxy clusters that appear in sheetlike and threadlike shapes are known as A. superclusters.
B. large clusters.
C. local clusters.
D. Milky Way center

Answer:

For low-mass stars, after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.

False.

• The Pacific Ring of Fire consists of active volcanoes, not just extinct ones.
• It is an area in the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur due to the movement of tectonic plates.

Final answer:

The statement 'Pacific Ring of Fire consists only of extinct volcanoes' is FALSE.

Explanation:

The Pacific Ring of Fire is a major area in the basin of the Pacific Ocean known for its high volcanic and seismic activity. It is a horseshoe-shaped ring that spans approximately 40,000 kilometers (25,000 miles) and is associated with a series of oceanic trenches, volcanic arcs, volcanic belts, and plate movements.

The Ring of Fire is home to approximately 75% of the world's active volcanoes, making it a highly active volcanic region. However, it is important to note that the Ring of Fire consists not only of active volcanoes but also includes dormant and extinct volcanoes.

Extinct volcanoes are those that are no longer expected to erupt in the future. They have become inactive and have not shown any signs of volcanic activity for a significant period of time. While the Ring of Fire is known for its active volcanoes, there are also dormant and extinct volcanoes within the region.

Learn more about pacific ring of fire and the presence of extinct volcanoes here:

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