Catalyst is a substance that speeds up a chemical reaction, but is not consumed by the reaction; hence a catalyst can be recovered chemically unchanged at the end of the reaction it has been used to speed up, or catalyze.
The sweating or shivering are hunpman examples of homeostasis
Answer:
When the soot vanished, the light-flecked moths started to repopulate. Their numbers increased as the dark peppered moths began to decline.
Explanation:
Answer:
it provides energy to the body.
