What is cyclic brane theory? i need a definition.

Explanation:

The cyclic universe theory is a model of cosmic evolution according to which the universe undergoes endless waves of expansion and cooling. It's any of several cosmotoligal models in which the universe follows infinate, indenfinate, self-sustaining practices.

I hope my answer helped you! Have a great day!

A rating and a Thanks would also be great!

the cyclic theory is model of comic evolution according to which the univers undergoes endless cycle of expansion and cooling each beging with a bigban and ending in big crunch

Fireworks exploding is a chemical change.

Explanation: Lighting gunpowder, and making the explosion is a chemical change.