Foods thawed in the microwave can be refrozen after heating it to this safe temperature. It is safe to reheat frozen leftovers without thawing, either in a saucepan or microwave (in the case of a soup or stew) or in the oven or microwave (for example, casseroles and combination meals).
Post-secondary education is a level of education that goes beyond a secondary level of education. This is usually any type of education after high school, which is considered secondary education. Post-secondary education is offered by colleges, universities, vocational schools and any other educational facilities that provide an academic degree or certificate.
As a general rule an undergraduate degree such as B.A. or BSc is a first degree usually taken after high school. The 'B' in B.A stands for Bachelor hence Bachelor of Arts or Bachelor of Science. A post graduate degree is a higher award usually taken after the bachelors degree. Some examples of post graduate degrres are: M.A (Master of Arts.) M.Sc (Master of Science) M.B.A (Master of Business Administration .) Sometimes the Master's degree is issued as a first degree, that is without taking a Bachelors first.