To measure (the depth of a body of water).
To test (an upright surface) to determine the vertical.
Atoms bond to gain, lose, or share their valence electrons in order to complete and have a stable outer energy level. Only the amount of electrons is changed and the atom still has the same protons, neutrons, and other properties.
Answer:
#1 is bound. 2 held together by ties
#2 is tire. 1 to use up strength or energy
#3 is store. 1 to gather and keep for future use
#4 is bound. 2 to. leap; spring
