The difference between generative writing and drafting is that a generative writing brings up ideas, drafting develops one idea. It is a simple way to differentiate between generative writing and drafting. The correct option among all the options that are given in the question is the first option or option "a".
For example salt in water ,salt would dissolve ,you won't be able to see it but if you taste it it would still be there
dissolve /disappear but still be there
Every cell of the organism has the same DNA sequence and same genes. However, not all genes are expressed in every single cell at the same time. Only those genes necessary for a specialised function of a specialised cell are expressed in the specialised cell. For example, skin cells have some different proteins than nerve cells. Genes responsible for those "skin proteins" are activated in skin cells and are turned off in nerve cells.
Golgi body is all I would know for this but the proteins I don't know
The sun provides the most energy in the ecosystem