Answer:
I am found on Mercury Venus Earth and Mars but not on Jupiter or Saturn. What am I?
I am expelled from you orally with a sound
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
I am milky white and scares people.
I can run but not walk. Wherever I go, thought follows close behind. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.