Which statement  best  describes the formation of diamonds?                 a.  diamonds form in talc under very low pressure.      b.  diamonds form in kimberlites under very low pressure.      c.  diamonds form in talc under very high pressure.      d.  diamonds form in kimberlites under very high pressure.

Renaldo and nasreen build an electromagnet by wrapping a wire around a nail and connecting the wire to both terminals of a battery. when they test the electromagnet, it can pick up 6 paper clips. their teacher wants all groups to pick up at least 10 paper clips. what could renaldo and nasreen do to increase the number of paper clips their electromagnet picks up?