2. How many variables are tested in any controlled experiment?

8) this map shows the population density of india. the redder the area, the higher the concentration of the population. which is the most likely reason for the high population density in the northeastern part of india? a) there is little pollution there b) the ganges river is in the region c) most of the factories are located in that region d) most people want to live close to the himalaya mountains

Who was put in the concentration camps? and why

Which country had the most spiritual influence on classical china? a) india b) japan c) korea d) mongolia