Answer:
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Topsoil consists of most weathered mineral and organic material. Biological agents are also responsible for the breakdown of complex organic matter which releases simple nutrients. This process of mineralisation make soil fertile.
Explanation:
Answer:
I,Br,Cl,F
Explanation:
ionization energy decreases the farther down an element is
BROO DEE YOU ALREADY KNOW WHAT IS STOP DA CAP, o.81