In fact, the term microwave safe is not regulated by the government, so it has no verifiable meaning. It is often found in plastics marked No. 7, but may also be present in some plastics labeled with Nos. 1, 2 and 5 as well, according to the report. Better to stick to glass or ceramics.
What is BASELINE DATA? The first data that will be compared against future data.
Often, it's helpful to look for information either right now, or from the time when your coalition first got started. This latter information, sometimes known as baseline data, tells the scope of the problem before you started work.