Answer:
They can't because they are complete by themselves, i.e. independent of each other to survive, unlike higher animals and plants.
Idk anything right now, I’ll comment the answer later
Explanation:
Chemical digestion is a vital part of the digestive process. Without it, your body wouldn't be able to absorb nutrients from the foods you eat. While mechanical digestion involves physical movements, such as chewing and muscle contractions, chemical digestion uses enzymes to break down food. Make my inbox healthier.
the human body is always at work and using all organs the bodys largest organ is the skin
The more people the more waste that will be created so D
