Question

Involves combining of nuclei:

Answer 1

Explanation:

Involves combining of nuclei:  Nuclear fusion

Nuclear fusion is a radioactive reaction  in which small atomic nuclei combines into larger ones with the release of a large amount of energy. The energy released is used to furnish a series of chain reactions.

Produces dangerous radioactive waste:  Nuclear fission

Nuclear fission is used in powering most nuclear power plants. The products of these reactions are radioactive in nature. They are very dangerous to human health and the environment at large.

Have high activation energies:  Nuclear fusion

The activation energy is the energy barrier that must be overcome before a reaction starts. Nuclear fusion reactions require very high amount of energy input to overcome the activation needed to start the reaction.

Releases large amounts of energy:  Nuclear reactions

Both nuclear fusion and fission releases large amount of energy.

Occurs in the stars:  Nuclear fusion

Nuclear fusion occurs in stars and they involve the combination of atomic nuclei to form larger ones.

Drives chemical plants: Nuclear fission

Chemical plants uses electricity and nuclear power plants can produce electricity through nuclear fission.

Learn more:

Nuclear reactions brainly.com/question/9566647

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Answer 2

Answer:

for anyone new looking for an answer the only correct ones the previous answer got are the last two.

Explanation:

heres my copy and paste of the correct answers

Involves combining of nuclei:  

✔ nuclear fusion

Produces dangerous radioactive waste:  

✔ nuclear fission

Have high activation energies:  

✔ nuclear fusion

Releases large amounts of energy:  

✔ both

Occurs in the stars:  

✔ nuclear fusion

Drives chemical plants:  

✔ nuclear fission