How does the composition of a typical lava dome differ from that of a typical fissure eruption?

1 answer:

3 0

A lava dome would most likely be composed of a very viscous lava rich in silica like a rhyolite which would cause it to dome upwards and solidify quickly rather than spread out over the surface of the earth like a fissure eruption which more likely would be like a basalt much less viscous and flowing more freely.

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mihalych1998 [28]

Answer: Glial cells called ASTROCYTES help maintain the blood-brain barrier, whereas SCHWANN CELLS create the myelin that envelopes axons

Explanation: Glial cells are specialized cell that are found in both central and peripheral nervous systems, that surrounds the neurones, providing them with support and insulation. There are different types of Glial cells these includes:

- Astrocytes: they maintain the blood brain barrier.

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- satellite cells: These cells help regulate the external chemical environment of neurones.

- Microglia: they clean up cellular debris through phagocytosis.

- Oligodendrocytes: create the myelin that envelopes axons of the central nervous system

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Therefore, Option D. All of the above is correct!!~

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