Which of the following experiments raises ethical concerns

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

In a copper wire, a temperature increase is the result of which of the following

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium