What is Aetna ESA PPO?

What is Aetna ESA PPO? The Aetna Medicare Advantage PPO with an extended service area (ESA) is a plan offered to eligible members of the Federal Employees Health Benefits (FEHB) program. It’s a nationwide plan that takes a total approach to your health by covering your doctors, hospitalization and prescription Read more…

What is a naked amoeba?

What is a naked amoeba? Naked lobose amoebae are traditionally called gymnamoebae, a group of aerobic amoeboid protists, unified by forming wide, smooth, cytoplasmic projections (lobopodia), driven by an actomyosin cytoskeleton. Cilia or flagella are absent. What organisms are in the phylum Amoebozoa? Amoebozoa includes many of the best-known amoeboid Read more…

Is helium an anion?

Is helium an anion? Hydrogen and the elements below it in the periodic table frequently lose an electron to other atoms and become +1 cations. Helium and the other elements in its column are very unreactive. They don’t ever form anions or cations. Is helium cation anion or neutral? The Read more…