Bifocal subjects are vocational subjects. They include Computer Science, Electronics, Scooter Motor Mechanics, Electrical and Civil Mechanics. You can choose a vocational subject in 11th std as as optional subject given that you have the required percentage. Choosing a vocational subject rids the student of two other option subjects like biology, german, sanskrit, geography.
Bifocal
It means you are using a bifocal contact lens that has a bifocal power of about +1.25 to +1.50. A high add would have the bifocal power of about +2.50.
It is lenses which Benjamin Franklin invented.
I'm not sure what you mean by "bifocal stream college." Can you provide more context or clarify your question so I can better assist you?
Curt Thesing has written: 'Experimentelle Biologie' -- subject(s): Biology 'Lectures on biology' -- subject(s): Accessible book, Biology 'School of biology' -- subject(s): Biology, Evolution
Colleen M. Belk has written: 'Biology' -- subject(s): Biology 'Biology' -- subject(s): Biology, Physiology
When I was in school,Biology was my favorite subject.
Specialized in Biology means person is perfect in that subject. The person is most educated in that subject.
Alvin Nason has written: 'Essentials of modern biology' -- subject(s): Biology 'Biologia / Textbook of Modern Biology' 'Biology; introduction to life' -- subject(s): Biology
What is a passing score on the sat subject in biology]
Eleanor Lawrence has written: 'Henderson's dictionary of biology' -- subject(s): Biology, Dictionaries 'A guide to modern biology' -- subject(s): Biology