Below are the interpretations of this model from 4 students, which interpretation is correct as to what is happening?
This model shows creation of an RNA strand after unwinding the DNA from the
chromosomes.
This model shows disassembly of an old DNA strand so that nucleotides can be
free for a new strand.
This model shows the production of a protein from free floating nucleotides.
This model shows DNA replication after a previous strand was used as a
template.

dang you just copied and pasted

explanation:

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.

a metamorphic rock would be formed.

i am sorry but i need more information and a picture.