Solve each problem and write the matching letter on the blank above the answer. Enter the correct phrase: (use capital letters)

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy

Don’t know. don’t care.look it up on google

1b. convection2f. the same

Aquantity of that isotope to decay to 1/2 of  its original value