Can you me with the summary for each

"the trouble is," sighed the doctor, grasping her meaning intuitively, "that youth is given up to illusions. it seems to be a provision of nature; a decoy to secure mothers for the race. and nature takes no account of moral consequences, of arbitrary conditions which we create, and which we feel obliged to maintain at any cost." what larger idea is the doctor referring to when he says that nature takes no account of moral consequences? impulses often overrule a person’s sense of good and bad. nature forces women into motherhood. young people are prone to having delusions. morals play no role when we choose who we love.

This device blocks an opening along the base/floor of stairs or other walking or working surfaces where materials or body parts might otherwise inadvertently fall through. it should be 4 inches high, with not more than ¼ inch clearance above the floor

Based on the map, which arabian city will marco polo describe after kalhat if he continues northwest across the arabian sea?