The Comparative Abundance of The Elements - There are 92 naturally occurring elements, only 17 of them make up 99.5% of the earth's crust (including oceans and atmosphere). - In living things (plants, animals, people) the six most abundant elements are carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur. - The universe is dominated by the elements hydrogen (83%) and helium (16%) 1. The Crust The outside of the earth is a thin crust which is approximately 20 to 40km thick. The crust is a formation of dips and hollows which are filled with water to form the oceans and seas. On top of the earth's crust is an atmosphere, this....

Number Of Words: 494

Number Of Pages: 2

Join today and get unlimited access to our vast database of student-written essays and term papers. This paper along with over 45,000 other papers are available in our member's area right now. Full instant access is just seconds away! Membership Options Price 1 month  subscription $18.95 recurring        3 months subscription $34.95 recurring        6 months subscription $59.95 non-recurring