Question

The mass of the earth is made up mostly of which two elements?

Answer 1

wait didn't we do this one already

Answer 2

well this is #19

Answer 3

In bulk, by mass, it is composed mostly of iron (32.1%), oxygen (30.1%), silicon (15.1%), magnesium (13.9%), sulfur (2.9%), nickel (1.8%), calcium (1.5%), and aluminium (1.4%); with the remaining 1.2% consisting of trace amounts of other elements.
https://en.wikipedia.org/wiki/Abundance_of_the_chemical_elements

Answer 4

this is what i found

Answer 5

but idk why so much of it is oxygen

Answer 6

yeah see its a different question but thanks