What causes the earth’s magnetic field? a. circulation of van allen belts around the planet b. presence of charged particles in the inner core c. charged particles from solar wind hitting the magnetosphere d. movement of charged particles in the outer core

D. movement of charged particles in the outer core

Here is the right answer please mark as brainliest Thanks

it is the second option.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg