If the occupants are simple bacteria and no one else can do the job as well, then there is no cause for them to be pushed out by more complex creatures. (religion-online.org)
He cares a lot about other human beings, seeing them as complex creatures worthy of attention beyond that required by his team obligations. (sbnation.com)
Because they are such complex creatures, I have come to rely on other cat owners to give me tips and tricks. (meowkai.com)