what was the problem with the theory of continental drift (before 1930) and why was it initially rejected by the scientific community?

not sure if this is what you'r looking for nnew= nold

i think its y= -4x-14

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds