What does it mean when a guy that you text gets mad at you because your shirt shows your stomach?

depends on how you look at it. It means that they either think your fat and your shirt is too small or that your being too revealing and need to cover up your stomach.

Explanation:

Once before a guy got mad at me because of the same reason but it was only because he cared for my privacy and protection :)

It could mean that he’s being overprotective of you and cares about what u wear with certain people or during certain occasions.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.