Bert works on the giant turbines at a nuclear reactor. Steam moves these turbines to produce mechanical energy which can be transformed into other types of energy. What nuclear technology produces the steam that Bert sees every day?
Bert works on the giant turbines at a nuclear reactor. Steam moves these turbines to produce mechanical energy which can be transformed into other types of energy.

1. Radiation decay
2. Radiation isotope
3. Nuclear fusion
4. Nuclear Fission

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

option number c is the right answer.