What does a dead body look like after 4 week?

After four weeks, a dead body typically undergoes significant decomposition, with visible signs of decay. The skin may appear discolored, often turning greenish or black, while the body may swell due to gas buildup from microbial activity. Insects, particularly blowflies, may have laid eggs, leading to the presence of maggots. The overall appearance can be quite distressing, with the body showing advanced signs of deterioration.