Ecology, Evolution and Genetics. Solutions to many of the world's most pressing environmental issues require a basic understanding of nature at the organismal, population and ecosystems level.
Average. On average, women start to show around the fourth month of pregnancy, between weeks 14 and 17. By week 17 the uterus usually has expanded to just an inch and a half below the navel, making the pregnancy more obvious.
Amy -. If it is your second pregnancy, you can expect to start showing sooner. Your clothes will generally start getting tighter around the 8th week with a second pregnancy, and you may be into maternity clothes (or at least very stretchy pants) by the 12th week...