Answer:
Nuclear energy is energy that comes from the nucleus (core) of an atom. Atoms are the particles that make up all objects in the universe. Atoms consist of neutrons, protons, and electrons. Nuclear energy is released from an atom through one of two processes: nuclear fusion or nuclear fission.
Explanation:
If you have 2 plants, take wheat for example.
If there's one species who can produce lots of grain but takes a long time to grow, and there's a different species who produces very little grain but grows quickly, many farmers will try and get both of the good traits.
If they want fast-growing wheat with lots of grain, then they'll breed them together and hope that they get a species with both of the useful traits.
The same goes for animals. E.g, cows that are very big but don't produce much meat and a cow that's small but produces lots of meat in proportion.
