A metropolitan area, as it did in 1990, requires a Census Bureau-defined urbanized area of at least 50,000 people. A metropolitan statistical area containing an urbanized area of at least 2.5 million people can be subdivided into two or more metropolitan divisions, provided specified criteria are met.
Besides providing protein and fiber, they are also good sources of key nutrients, such as iron, folate, calcium, and zinc. Omega-3 fatty acids are good for your baby's brain and eyes, and salmon is a great source. Plus it provides protein and B vitamins. Salmon is also relatively low in mercury compared to other fish.
While there are many foods that are safe when you're not pregnant but unsafe when you are, protein bars -- at least generally speaking -- aren't among them and should be okay to eat when pregnant. During pregnancy, you need protein -- just as you do when you're not pregnant -- to serve several purposes.