Answer:
A catalyst speeds up a chemical reaction
Explanation:
It increases the reaction rate by lowering the activation energy for a reaction.
Answer:
the second one looks balanced but I could be wrong
Answer:
Anemometer. An anemometer is a type of weather instrument that measures wind speed.
Answer:
I don't know if you can directly prove it with evidence if you haven't observed it but you can maybe take an educated guess by the aftermath of it?
For example, you see a burnt log. At this time, people don't know what fire is. After we study the log, we could see that it takes extreme temperature in order to burn the log and that would help people see that there is a force like fire that can cause this. In a way, finding out that extreme temperatures burns stuff is another step closer to the discovery and proof of fire
I hope that makes sense
Answer:
u should call me justin bc I was just in your mom
