The rate of erosion of continents is measured by the: (A) reduction in elevation of mountains
(B) quantity of sediments in the ocean
(C) sediment load of the major rivers of the world

bc blah

explanation:

bc blah

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

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me and my friend did 2