Methane gas is not considered dangerous to humans by inhalation. Exposure to methane gas in air with low oxygen levels may cause dizziness, headaches and a feeling of fatigue with no lethal effects. More »

Some of the effects of human activities on the environment include global warming, habitat destruction, land degradation, overpopulation, pollution and resource depletion. These effects are a result of human activities s... More »

Habitat fragmentation, reduced biodiversity and melted permafrost are a few results of human interaction with the tundra. Despite the tundra's year-round ice and sparse vegetation, it is a sensitive biome that is easily ... More »

Methane hydrate is crystallized water containing trapped methane which is found in the outer regions of space and deep in the ocean floor. It is represented by the chemical formula (CH4)4(H2O)23. More »

Natural gas is a fossil fuel composed of flammable gases, primarily methane, that formed from decaying organisms buried deep beneath the Earth's surface due to intense heat and pressure over thousands of years. It is one... More » Science Chemistry

Nonpolar molecules include hydrogen and oxygen gas, methane and gasoline. Alkynes are also considered nonpolar. Generally, nonpolar compounds are considered water insoluble and do not dissolve in water. More »

Sewer gas is harmful to human health because it contains methane gas, which contains a mixture of toxic gases. One of these is hydrogen sulfide, which can affect the functioning of the central nervous system, according t... More » Health Conditions & Diseases