Why do we need both a small and large intestine?

So im writing an editorial and i need understanding what this verse means from a song lyric. the editorial is about depression but i need understanding what this could mean “her feelings she hides, her dreams she can’t find. she’s losing her mind. she’s fallen behind. she can’t find her place. she’s losing her faith. she’s fallen from grace. she’s all over the place.”

What risk factors do people in urban areas have, regardless of their individual behaviors? what conditions are they at risk for?answer quickly i need the answer

Which will cause allergies if you inhale them, eat them, or touch them?