Consequently, unlike their counterparts in more permanent bodies of water, they have evolved a short lifespan of only 4 - 6 months, making them excellent candidate organisms for studying aging. (sciencedaily.com)
Children's cabinets differ from task forces in that they are typically permanent bodies with a broad focus on policies that affect children from birth to college. (americanprogress.org)
Now, all that being said, I do kind of disagree with a church asking their congregation to get permanent body art for Lent, which is meant for giving up something for a relatively short period of time... this is something that they'll always have with them, even though their beliefs may change. (religion.blogs.cnn.com)