Question

which element present in petroleum are major pollutants of environment.Name the process by which energy is obtained from the food

Answer 1

petrolem hydro carbons are present in petroleum

digestion is the process of obtaining energy from food

Answer 2

element present in petroleum are major pollutants of environment:-Petroleum is a naturally occurring complex mixture made up predominantly ofcarbon and hydrogen compounds, but also frequently containing significant amounts of nitrogen, sulfur, and oxygen together with smaller amounts of nickel, vanadium, and other elements.

the process by which energy is obtained from the food:-Respiration is the process by which food is broken down to release the energy