How do you avoid common errors capitalization ,punctuation and spelling in writing?

Nutrients are chemical substances that are absorbed by the body through the process question@ask for

Sometimes the animals arrive at the shelter very sick. however, the shelter workers will not allow anyone to adopt a seriously ill animal. which is the conjunctive adverb? sometimes however anyone at

Both wiesel’s all rivers run to the sea and spiegelman’s maus relate events of the holocaust from a jewish survivor’s perspective. using the third-person point of view. by retelling the experiences of friends. through the eyes of their fathers.