Which of the following was a discovery of edwin hubble?
a. the existence of other galaxies
b dark matter is causing the universe to contract
c. the universe is over 40 billion years old
d. the big bang theory.
e. electron degeneracy of stars

Answerhorizontal;

Prioritizing is the answer

Some connecting rods have to lubricate the cylinder wall or piston pin. the answer is letter d. graphite coating can be a major  additive to many  coating  systems and things such as connecting rods.  it functions as a refractory, lubricant, thermal conductor, and electrical conductor for a machine or thing to enhance its work.

  the tendency to view one's own culture  and  group as superior  is called. cultural relativism.