Answer:
The correct answer is sedimentary rock.
Explanation:
The sedimentary rocks are the types of rocks, which are produced due to the deposition and the succeeding cementation of that substance at the shallow part of the Earth and within the water bodies. In the geological sciences, sedimentation refers to the procedure of the deposition of the solid substance from a state of solution or suspension in a fluid, that is, water or air.
I believe that A is the answer. :)
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Answer:Ba
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Explanation:
option A:
is an anion and 
is also an anion.So,there is no reaction.
option B:
reacts with to form 
.
Since 
is a first group element,all its salts are soluble in water.
Hence no precipitate is formed.
option C:
reacts with to form 
.
Since 
is a first group element,all its salts are soluble in water.
Hence no precipitate is formed.
option D:
reacts with to form 
.
Solubility of sulphates of second group elements decrease down the group.
So, is a precipitate.
The lithosphere is the solid, outer part is the earth it includes the brittle upper portion of the mantle and the crust and the outermost layers of Earths structures
