The lower mantle is composed of magnesium, iron-bearing silicates, olvine, and pyroxene.
The mantle has the most mass
If you could please include the phrases, you could get a more defined answer.
State: California
City: New York City
Answer: Plastic waste and industrial effluent too choke India's holy river. But the most serious long-term threat to the Ganges is lack of water. For many years, the flow of the river has been ebbing. Activists blame most of the deficit on unsustainable extraction.
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