What was the endurance crater like? describe what the opportunity rover found and photographed there.

The Endurance Crater was about 150 meters in diameter and about 20 meters deep. The wall of the crater contains layered rock and is laden with blueberry-like rocks. In the upper reaches of the crater, the “blueberries”are perfectly round spheres of hematite, but the rocks in the lower reaches of the crater look like popcorn and have a coating of salts.

The Endurance Crater was about 150 meters in diameter and about 20 meters deep. The wall of the crater contains layered rock and is laden with blueberry-like rocks. In the upper reaches of the crater, the “blueberries”are perfectly round spheres of hematite, but the rocks in the lower reaches of the crater look like popcorn and have a coating of salts.

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.