Which type of reaction occurs in the sun to release light and heat? a. nuclear b. chemical c. fission d. cohesion

I'm not quite sure, but I believe that it would actually be "nuclear" because the sun would contain nuclear waves. And because of this, this would probably be the kind of reaction the sun to release light and heat.

The correct answer would be nuclear

29.1-12=17.1the answer is this one

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.