03 civic ex. 45k miles. Today i took out my air filter to check and i open up throttle plate and inside the throttle plate, ( not on the top portion of it but inside the throttle plate portion), i saw black greese. Is it normal ? or i should clean it up. and if yes. what shold i use ?

2: Outside of the winshield (front), plastic that holds it in place (bottom one) is kind of pilled off a bit. How do i stick it back ? what kind of glue shold i use ?

Please advise.

Thanks