Is a type of weathering where rock is dissolved by an acid

Chemical Weathering  is a type of weathering where rock is dissolved by an acid

Explanation:

Weathering are of two types- Mechanical and Chemical Weathering. In chemical weathering, the molecular structure of different rocks and soils change through chemical reactions.

For example, in carbonation the carbon dioxide of air and often soil mixes with water. This combination forms a acid named carbonic acid that dissolves rock. It especially dissolves the limestone rock. Through the dissolving of limestone huge caves are formed.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

i would go with b

cytokinesis occurs after telophase so that eliminates d

and the entire reason for cytokinesis is for cellular reproduction