Bacteria are single celled and prokaryotic organisms. They replicate in an asexual manner. They can be harmful as well as beneficial; it depends upon the type of bacteria. On the other hand, viruses are non...

Bacteria are single celled and Prokaryotic organisms. They replicate in an asexual manner. They can be harmful as well as beneficial; it depends upon the type of bacteria. On the other hand, Protozoa are...

Pulsar is a rotating neutron star, that is highly magnetized and it emits a beam of electromagnetic radiation. Quasar stands for quasi-stellar object and that refers to any of the celestial object that is...

Neutron stars are the collapsed cores of some massive stars, created during supernova explosions. Pulsar is a rotating neutron star, that is highly magnetized and it emits a beam of electromagnetic radiation.

United States (U.S.) and United States of America (U.S.A.) refers to a federal republic that consists of fifty states and a federal district. Therefore, there is no difference between the two.