D. I or Iodine
This is because they are both in the same periodic family (the halogens) and thus the number of valence electrons are the same
Because it throws the earth off balance and if it does it often enough then it will soon add up.
A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in another
Chemical bonds is the answer
Well.. if ur going down a ramp, friction beat gravity, right....??? I guess, I I have an idea hahha