Hey Anna,
Aerospace Engineering is a 4-year undergraduate degree course in the field of engineering which deals with the study of design, construction, and science of aircraft and spacecraft.
For admission to this course, you must have passed 12th examinations with Physics, Chemistry and Mathematics as compulsory subjects.
So, Anna if you have Maths along with Biology in 12th grade, then you are eligible to apply for the course.
Good Luck!