Why Would a Plume of Solid Silicate Rock Rising Slowly

question 36

Multiple Choice

Why would a plume of solid silicate rock rising slowly from deep in the mantle begin melting as it neared the base of the lithosphere?

• A)Temperatures remain high because of the geothermal gradient.
• B)The rock heats up and expands at lower pressures, causing it to liquefy.
• C)The lowered pressures cause rapid heat loss accompanied by melting.
• D)none of the above

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A broad range of medical conditions that affect mood, thinking, and behavior, often requiring treatment and support.

Poverty

Poverty is a socio-economic condition characterized by a lack of financial resources and access to basic needs such as food, shelter, and healthcare.

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A racial or ethnic group in the United States with ancestors who are predominantly from Sub-Saharan Africa.

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Psychiatric conditions characterized by intense and irrational mistrust or suspicion, often without sufficient basis.