What does 'the matter in your body has been on earth for billions of years.' mean? !

But you are made of matter billions of years old, and are a result of billions years long processes, and that is just fantastic, ennobling and uplifting,

You are an integral part of something astounding, and as such pretty astounding yourself.

Even if you aren't Billions of years old.

answer; /// i believe that the correct answer is (c); ///when the lungs expand, they fill with air from the atmosphere;

the answer is a. mindy is leading by example. hope this .