What is a redox reaction? Write down a chemical reaction representing it. Identify the reducing and oxidizing agents.​

A__ is two or more substances that are together in the same place but are not chemically combined

Explain that newton first law,second law and third law of motion?

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.