When we say that electrically charged particles in the atmosphere cause lightning, we mean 'cause' in the sense of a: Group of answer choices Necessary but not a sufficient condition. Necessary and a sufficient condition. Relative and an absolute condition. Relative but not an absolute condition. Sufficient but not a necessary condition.

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask