No. If you suck at essays you suck. Full stop!
An engineer or computer scientist may have to write good proposals to get funding. They will need to sell their skills and ideas to prospective customers. Communication with co-workers will require clear instructions. Although some of these things may be done verbally, many will require good writing skills.
yeah
Surely no. Whatever may be the field we need good communicating skills. Incase of written exams that will be shown by the essays and description that we are going to provide.
-- No. You should not be ashamed of yourself. -- No. If you fail science and engineering, that won't be the reason.
Not really. Science Engineering deals basically with Math subjects. Therefore, if you're good in Math, you'll do good in Science Engineering.
Other than the science and engineering disciplines(except for software engineering, computer science and biology), most disciplines in the humanities, social science and to a certain extent, businesses that don't require mathematics, paper writing skills are needed in the workplace, even with years of experience won't do you good unless you possess a certain skills set.
Yes
You may want to choose computer science if you are interested in computers and how they work. It may also be a required class you need to graduate.
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Engineering is for students who have a fascination and curiosity for the subjects and tasks that engineering deals with. Others need not apply. It makes very little difference what they're good at or not good at. (Answer written by a person with a piece of paper that says he became an engineer almost 40 years ago, and who is still at it.)
Not necessarily. You're in school to get better at those things.
There are some websites tat will write your essays of a 1 000 words or more for you. This is not one of those sites
It is not the purpose of this site to write people's essays for them, just to answer questions. As for the usefulness of science, I will remind you that without science you would not have a computer with which to ask us that question. The usefulness of science is seen everywhere in human society.