Given a scientific question, generate an incorrect answer to the given question. The incorrect answer should be a plausible alternative to the correct answer. The answer should be some other item belonging to the same category as the correct answer but should be incorrect.

Q: This sharing of electrons produces what is known as a covalent bond. covalent bonds are ~20 to 50 times stronger than what?

A: Mendelian systems
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Q: Covalent bond energies can be used to estimate the enthalpy changes of what?

A: crystals reactions
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Q: What causes the particles of medium to move parallel to the direction of the wave?

A:
mechanical waves
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