Describe the motion of these galaxies (each raisin represents a galaxy in the bread model) relative to one another.

The Apparent Movement of Galaxies

The expansion of space itself makes it appear as though galaxies are moving apart and causes the spectral lines to shift, changing their colors. The expansion of space causes galaxies to appear to be moving apart from each other.

Explanation: searched up on google

oak trees? ? what was listed

b. the carbon cycle ensures living things have a source of hydrogen