Which statement would most likely be found in an advertisement from a cell phone provider? Cell phone use may result in damage to brain tissue. The number of cell phone users increases every year. Cell phones emit potentially harmful radio waves.

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Draw the lewis dot structure for each of the following polyatomic ions