Questions

In computing, ".bak" is a filename extension commonly used to signify a backup copy of a file.

Though not the largest producer, Burma is an important exporter of rice because production exceeds demand.

Mitochondria are present in both plant and animal cells.

Cosmology is the scientific study of the large scale properties of the universe as a whole. It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe.

Depending on the outcome of the observations, the theories will need to be abandoned, revised or extended to accommodate the data. The prevailing theory about the origin and evolution of our Universe is the so-called Big Bang theory.