Anail rusts when the iron in the nail reacts very slowly with oxygen to form a new substance and heat. this is an example of a(n) reaction. a. fusion b. fission c. exothermic d. endothermic

dz nuts.   eeneneneeenenne

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.

its probably to later but whats the question