Valency of oxygen is two. why??

The discovery of the electron as a subatomic particle was a result of

Which of the following list the divisions of the geologic time scale in order from longest to shortest

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 (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to