The biggest cause of air pollution is: A. factories
B. airplanes
C. buses
D. automobiles

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

What is involved in redox reactions

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o