Two Nitrogen atoms bonded together is what? *
O Atom
O Molecule

Help me please

What layer of the atmosphere is directly above the troposphere?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Drug abuse will not lead to physical and psychological dependence. true or false ?