Nh3 goes to nh4 did it gain or lose a proton

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

What is the correct equation for cellular respiration?