Question

hydrocarbons are a by - product of which of these? the atmosphere agricultural dust burning fossil fuels the troposphere

Explanation:

Hydrocarbons are organic compounds consisting of hydrogen and carbon. Burning fossil fuels (such as coal, oil, and natural gas) releases various pollutants, and hydrocarbons are among the by - products. The atmosphere is a mixture of gases and not a source of hydrocarbons as a by - product. Agricultural dust mainly contains soil particles, organic matter from plants etc., not hydrocarbons as a by - product. The troposphere is a layer of the atmosphere and not a source of hydrocarbon by - products.

Answer:

burning fossil fuels