Jacob is unsure about how to focus a slide under the microscope. what would be jacob’s best course of action? ask the teacher for instructions. ask his lab partner for instructions. watch another student, and copy what he or she does. use the trial-and-error method until the slide focuses.

Jacob should ask the lab partner first, he/she would know what to do. If he/she doesn't, Jacob should ask his teacher. Watching another student would most likely be a mistake, because that student might be looking off someone else, who doesn't know what they're doing. (There's always that possibility.)

1. Ask the teacher for instructions. Let me know if this helps

Cramming you staying up all night to get a lot of work done for a class and is very stressful

Answer: the dna polymerase checks for errors in dna to prevent replication mistakes.
i hope this !