Which choice tells the main causes of convection currents in the asthenosphere? A.
density and temperature

B.
temperature and pressure

C.
density and weight

D.
weight and pressure

9. wind power creates pollution. water air soil noise

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

What’s the student’s scientific question