What major process that requires oxygen do organisms perform to produce energy?

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it

Need the answers if its a multiple choice question

Gravitational force i believe

Because some people pollute water ans waste it