Fechar
Where do fossil fuels come from?
What are fossil fuels?
What do fossil fuels contain?
What are the major compositions of coal?
What are the major compositions of petroleum?
What are the major compositions of natural gas?
How did the coal form?
How did natural gas and petroleum form?
How can different fractions in petroleum be separated industrially?
Name 4 petroleum fractions and what are the major uses of these fractions?
What is combustion?
What are the products of combustion of fossil fuels?
What are the major sources of air pollutants and where do they come from?
What is acid Rain?
What are the harmful effects of acid rain?
What is global warming?
What are the harmful effects of global warming?
What are the harmful effects of oil spillage?
