Do you think that a sustainable environment should be a goal of the world's society ? *subject Sociology*

Okay i need to answer 10 questions

Ithink the answer is c hope i

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.