Population genetics is a subfield of genetics that deals with genetic differences within and between populations, and is a part of evolutionary biology. Studies in this branch of biology examine such phenomena as adaptation, speciation, and population structure.
RVCA (pronounced: rue-cah) is a clothing company based in Costa Mesa, California. The logotype for RVCA portrays the letter A without a crossbar. This leaves it looking like a lambda .The 'V' looking character in RVCA name is a 'U'. The 'U' is written in traditional Roman script, and thus appears as a 'V'.
Orca is Latin for a kind of whale. Because wild killer whales are not a threat to humans, and the term killer has a derogatory tone, many people now refer to these whales as orcas, rather than killer whales. At least in the U.S., and even among whale researchers, killer whale still seems to be used more commonly, although I've used both terms in this article.