Which change might cause a cold spell in the nothern united states?

coconut why: has water in it : )

is in the form atp or adenosine triphosphate

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

the contamination

we are putting to many trash.