Which of the following is true for an electromagnetic wave? It requires a medium to travel.
It is a longitudinal wave.
It is a transverse wave.
None of these are true for an electromagnetic wave.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Which inventor was often called the lady edison

How much hereditary information is contain in a human sex cell