Jill said that when you are standing in front of a fire you are warm because you release the coolness of your body to the heat of the fire. greg said that when you are standing in front of a freezer with the door open you feel cool because you are releasing your heat into the freezer. who has made the accurate statement regarding heat transfer? jill is correct. greg is correct. both jill and greg are correct. neither jill nor greg are correct.

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-