Think Deeper: If stars, and most of the universe, are composed primarily of hydrogen and hellum, then why are all living things on Earth composed primarily of Carbon, Nitrogen, Hydrogen, and Oxygen? Where does this material come from?

Object a has a length of 3 cm, a width of 2 cm, and a height of 4 cm. object b is dropped into a graduated cylinder. it displaces 19 ml of water. the volume of object a is: a: greater than the volume of object b b: less than the volume of object b c: equal to the volume of object b