The tool most effective at monitoring the anaerobic conditions caused by sudden spikes in the population of algae in a lake is the

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

Yes yes yes very good

The answer would be semen as a whole but the cells contained are called sperm and they fertilize the eggi hope this