The combustion of [1] \text{\___\___\___\___\___\___\___} fuels, such as coal and oil, releases carbon dioxide. This process also releases [2] \text{\___\___\___\___\___\___\___\___\___\___\___\___\___\___}, which dissolves in water in clouds to produce [3] \text{\___\___\___\___\___\___\___}.

In instances of incomplete combustion, an extremely toxic gas called [4] \text{\___\___\___\___\___\___\___\___\___\___\___\___\___\___} is emitted. This gas readily binds to [5] \text{\___\___\___\___\___\___\___} in red blood cells, which severely reduces the transport of [6] \text{\___\___\___\___\___\___\___} around the body.

Carbon dioxide contributes to the rising of Earth's average temperature, a phenomenon known as [7] \text{\___\___\___\___\___\___\___\___\___\___\___\___\___\___}. Along with carbon dioxide, other [8] \text{\___\___\___\___\___\___\___} gases contribute to this effect. One such gas is [9] \text{\___\___\___\___\___\___\___}, which is released from the digestive systems of farm animals. Others include [10] \text{\___\___\___\___\___\___\___}, which were formerly used as cooling agents in refrigerators.