Which of the following is/are responsible for giving a galaxy its particular shape?
O A. Cosmic microwave background radiation
O B. Supermassive black holes
• C. Dark matter
D. Dust and gas

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th