Select the word from the list that best fits the definition which scale of measurement measures the magnitude or strength of an earthquake based on seismic waves? mercali richter moment magnitude focus

The correct answer of the given question above would be the second option: THE RICHTER SCALE. The scale of measurement that measures the magnitude or strength of an earthquake based on seismic waves is called the Richter scale. In addition, Mercali scale is used to measure the earthquakes according to their intensity and how much damage they cause at a particular place. Hope this answer helps.

On the galapagos islands charles studied finches

It won't lose or gain electrons if it's a covalent bond it shares the electrons with another atom or atoms. if it is an ionic bond it will lose the 3 electrons on the outer shell and become a positively charged ion.  credit goes to @sunshinebaby of answers.yahoo.com.