The answer I believe is moist air because it doesn't have a reacting bond in the molecules
A bond allows metal to conduct electricity <span />
When liquids are subjected to lower temperatures, the kinetic energy of the molecules would decrease accordingly making them closer to each other and leading to a decrease in volume until the substance is solidified. Hope this answers the question.
Answer is c photosynthesis
2 stands for valency of ca ion
its +2
that it takes two electrons to complete its shell
