Answer:
They affect chemical reactions by lowering the activation energy, thus speeding up the reactions.
The answer to your question is either drawbridge or scaffolding. I want to go with drawbridge because it has support and stands of for itself, so its similar to a stucture if that makes sense.
Answer: Microwaves and X-rays have different wavelengths and frequencies. Microwaves fall between infrared radiation and above radar radiation. X-rays fall above ultraviolet radiation and below gamma ray radiation. Visible light falls between infrared and through ultraviolet.
Explanation:
I believe these are the answers:) best of luck!
