Co2 is released into the atmosphere and so is sulfur dioxide which causes acid rain
That's the motor, which burns fuel and propels the boat.
An internal combustion engine burns fuel inside.
It burns with oxygen. That's all.
Fire does not burn, its whatever if fueling the fire that burns. For example, wood is a fuel that burns, and fire is the result. The speed at which a fuel burns, depends on the fuel. i.e. Wood burns much slower than gasoline.
It burns them
Fossil fuel
coal is a fossil fuel that burns without giving water vapour.
it burns you
It burns them
A leaner fuel mixture burns hotter than a rich mixture. so a leaner mixture will be more prone to detonation than a richer mixture.
when a car is driven, the gasoline it burns as fuel releases carbon dioxide into the atmosphere.
Oxygen