kindly help me in writing Essay/statement of career goals

Dear Sir/madam,

Please help me to write a motivation letter. i am from pakistan, not a native english speaker. I have done chemical Engineering and university asked me to write an essay like that. but i stucked. how to start and where to end. details are given below. Thanks. Good bye

Applicants to MESPOM program must submit a 350-word essay/statement of career goals and reasons for applying to this program, covering the following:´

a. The origins of their interest in environmental issues;

b. How they hope to benefit from the MESPOM(master in environmental sciences and policy, management) programme;

c. What are their future career plans;

d. Their relevant special interests;