Adult killer whales give birth to a single baby (only once were twins recorded) about every 3-10 years. They start breeding at about 14-15 years of age (the youngest known was only 11).
I've seen Univision translate the term bachelor's degree to licenciado, so I think it's reasonable to assume that to be the best translation. There may be some differences in the named programs overseas, though.
The primary meaning of libra was balance or scales (as in the astrological sign), but it also stood for the ancient Roman unit of measure libra pondo, meaning a pound by weight.. We got the word pound in English from the pondo part of the libra pondo but our abbreviation comes from the libra.