Many things, like:
The burning of fossil fuels by nature releases harmful greenhouse gases.
burning coal releases "greenhouse gases" which can be toxic and effect the environment
Fire releases carbon dioxide and other harmful gases. These gases increase the greenhouse effect and can lead to climate change.
Neither type release greenhouse gasses
Natural gas is a greenhouse gas, methane, and when it is burnt it releases the other greenhouse gas, carbon dioxide.
By the oil we burn it releases carbons into the air adding to the greenhouse effect and global warming.
it releases greenhouse gases into the atomosphere.
Vehicle exhaust releases greenhouse gases. These gases are heat reacting.
China has recently become the biggest annualproducer of greenhouse gases. The US remains the leader in overall amounts produced.
Burning ethanol releases greenhouse gases.
Methane
The particles are known as pollution, aerosols, or particulates, and the harmful gases might be anthropocentric greenhouse gases like carbon dioxide (CO2) and methane (CH4).