I become human if kissed, though how difficult this is, for I am slimy and green. Sometimes I blend in with trees.

My first is a sibling, one of four. If you’re allergic, I may make your nose sore. My second is a tool that can be condensed, But I can pop if you make me too tense. My third provides what all need to live. Find me in nature; I have plenty to give.

Something you put in your mouth, and a type of tree. Add a word to the end, you get footwear. Add a letter instead, it's part of your mouth. Reversed, it can contain a liquid.

A few fat cats control the whole house They taunt, tease, and squeeze squeaks from meek mouse Will rodents rally? For tallied in total the vote'll vie to decry Singeing cinders to hinder hypocrisy, or democracy dies

I can be drawn without ink, I can be shed without fur. Built by bone, or from birth you've known. We've bonds of iron so keep me close to your heart, for death might loom, should we part.