Decomposer is the organism that breaks down complex organic compound into simpler form.
Biosynthesis is a process that converts simpler compounds into more complex compound within living organisms.
Bacteria, worm, slugs, fungi like mushroom are some examples of decomposer.
Some process of biosynthesis is amino acid synthesis, photosynthesis, chemosynthesis and biosynthesis is necessary to carry out the cellular process in organism.
Biosynthesis is also called as anabolism process. Precursor compounds, chemical energy, coenzymes are some requirements for biosynthesis process.
