greenhouse gases are formed from fossil fuels like petrol. 

greenhouse gases all started with humans, we used fire and fossil fuels or natural materials to defend ourselves fro predators and creations.

now in the days when we use gases and natural resources to power things up, the gases get trapped up in the atmosphere and turns to green house gases, it deflects from the sun and in a way it explodes in a great radiation.

some of the ways we can reduce the amount of greenhosue gases are mainly: going to school without a powered resource like a bike, skateboard or a scooter.