Some environmental factors are how many deer there are in that park. If there is not a lot of deer, then the deer bag limit shouldn't go up, otherwise, there would be no more.
A rough endoplasmic reticulum has ribosomes on it's surface. A smooth ER does not.
Ocean waters has its own level of density which depends of the climate, temperature and most of all the location where it came from. The more the ocean water absorbs heat the more its density as a result it rises above from cold to hot. So the the water from the Antarctica usually is less dense and then become more dense when it goes to the equator which is more hot.
