Out of all the questions and people needing y do u choose this one?

Is the volume of voids or open space in a rock or unconsolidated material.

Only people in ap world history can can someone give me a question and a statement to present to the class about chapter 15,16,or17

Use the conversion factors to rewrite the distances in different, but equivalent, units. celestial objects distance from the star object a 0.000001877 pc object b 30.06 au object c 778.3 million km