Answer:
The external metal doors are generally painted with oil paint because when metal are left in humid areas a brown substance deposits on it called rust. As we know rusting is a chemical change and it cannot be reversed, to prevent rusting metals doors are painted with oil paint..
Explanation:
I hope this helps you :)
He was aware of the little knowledge of man and the vastness of knowledge
The sea route west to Cathay. It is not known when the idea originated of sailing westward in order to reach Cathay.
The general conclusion that can be drawn about the nature of learning is: <span>The capacity to learn is essential to the survival of all human and nonhuman animals.
The environment that humans that lived in will always changing. In order to survive in this environment, we need to constantly do an adaptation. There is no way we could learn to adapt if we do not learn about the environment around us.</span>
