What chemical processes can occur during metamorphism and deformation?

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

Ascientific idea becomes valid when it is what?

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?