Buying a gas barbecue can be more than a little complicated. You think you have worked out what you want, then you discover there are two types of LPG (Liqueified Petroleum Gas) â Butane and Propane.Not only that, but the gas bottles come with different sized valves.hat means that it is not possible to connect to a propane bottle using a butane regulator or vice versa. A clip-on propane regulator. Typical bottles sizes vary from 3.9 kg to 13 kg but note that those are the weights of the amount of gas in the bottles, not the total weight.
Water vapor is another greenhouse gas that keeps heat from the sun trapped in the Earthâs atmosphere and helps maintain a temperature at which life can flourish on our planet. However, deforestation also affects the amount of this in the air.
1 Water vapor. 2  The most abundant greenhouse gas, but importantly, it acts as a feedback to the climate. 3  Water vapor increases as the Earth's atmosphere warms, but so does the possibility of clouds and precipitation, making these some of the most important feedback mechanisms to the greenhouse effect.ases, such as water vapor, which respond physically or chemically to changes in temperature are seen as feedbacks.. Gases that contribute to the greenhouse effect include: 1  Water vapor. 2  The most abundant greenhouse gas, but importantly, it acts as a feedback to the climate.