What type of reaction is the following: 2h2+o2=> 2h2o

This is synthesis reaction because synthesis is when and element and an element combine together.

This immense mountain range began to form between 40 and 50 million years ago, when two large landmasses, India and Eurasia, driven by plate movement, collided. Because both these continental landmasses have about the same rock density, one plate could not be subducted under the other.Mar. 9, 2015