[Answer] Which if the following is a compound?A. AirB. WaterC. FireD. Earth

Answer: B. Water

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Which if the following is a compound?A. AirB. WaterC. FireD. Earth A carbon sink is any reservoir natural or otherwise that accumulates and stores some carbon-containing chemical compound for an indefinite period and thereby lowers the concentration of CO 2 from the atmosphere. Globally the two most important carbon sinks are vegetation and the ocean.Public awareness of the significance of CO 2 sinks has grown since passage of the Kyoto Protocol which ... Air pollution is the presence of substances in the atmosphere that are harmful to the health of humans and other living beings or cause damage to the climate or to materials. There are different types of air pollutants such as gases (such as ammonia carbon monoxide sulfur dioxide nitrous oxides methane and chlorofluorocarbons) particulates (both organic and inorganic) and biological ... Sat Jul 03 2004 · Diatomaceous earth (/ ˌ d aɪ. ə t ə ˌ m eɪ ʃ ə s ˈ ɜːr θ / DE) diatomite or kieselgur/kieselguhr is a naturally occurring soft siliceous sedimentary rock that has been crumbled into a fine white to off-white powder. It has a particle size ranging from less than 3 μm to more than 1 mm but typic...

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