Answer:
There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.
Explanation:
I need points
When that happens it begins to Sink deeper into mantle, but also rises<span>
</span>
Answer:
(e) arsenate
Explanation:
Arsenate -
arsenate are the chemical compound , that contains the arsenate ion , of formula , AsO₄³⁻ . The valency of the the arsenic atom in the ion is 5 , and has a pentavalent structure .
From the given compound in the question , the compound have an arsenate ion , hence it belongs to the Arsenate family .
Answer: The name Austria derives from a Germanic word 'austro' which means 'east'.
