Some factors could be:
weather
ressources
A. To solve problems... I think let me know if it helps
All elements are made of "atoms", and an atom is made up from 3 basic particles: Electrons are particles with a negative charge :)
Burning paper is a chemical change not a physical one. Hope this helped <span>
ﾉ◕ヮ◕)ﾉ*:･ﾟ✧</span>
It's a region of DNA that binds DNA Polymerase to begin replication.
