* University: Different universities have different curricula.
* Branch of Science: A BSc in Physics will have different subjects than a BSc in Chemistry, Botany, Zoology, or a more interdisciplinary science.
* Specific program: Even within a branch like Biology, there might be specializations leading to different subject choices.
To know the additional subjects for *your* BSc 2nd semester, you need to consult:
* Your university's syllabus or course catalog: This is the most reliable source.
* Your department's website: Look for the curriculum for your specific program.
* Your academic advisor: They can provide personalized guidance on your coursework.
Without knowing your specific university and branch of science, it's impossible to provide a definitive answer.