Correct an english letter

Could someone please check my answer and make necessary corrections? Thank you!

Please provide a brief statement of your educational interests and goals.

A: My educational interests lead me towards on avocation of food science. I want to be very involved in improving the quality and safety of the food (by finding new ways to package and store food) especially in today‘s lifestyle. I would like to focus on the nature of food at both the molecular level and development of food preservations and improvements.

Studying the components that make up food allows me to study the eating habits of today’s population, the amount of calories that are in certain foods, and the diseases that are associated with food. Food borne illnesses can become a problem when food is not cooked thoroughly, or not stored properly. Preservatives, additives, and other chemicals are used to allow certain foods to stay fresh for a longer amount of time. Since many foods contain chemicals and materials that raise cholesterol levels, contain high levels of fat, and are prepared in oils that are not healthy, I would like to work on ways to help people remain healthy without sacrificing taste or other healthy materials that may be found in these foods. This is just one of the many areas that I am interested in. I’m also concerned with producing enough food to feed the growing world population. My carrier goal is to upgrade my education and get deeper knowledge in those areas of my interest. The good thing is the food industry is constantly changing, creating new opportunities and producing exciting careers for its employees.