The correct answer would be the second option. The correct plan for his experiment would be that the temperature, the type of limestone, and the type of acid are controls. The amount of acid and the amount of damage to the limestone are variables. To determine the degree of damage of the acid it would be best that the amount of acid is the manipulated variable while everything else are assumed constant.
I believe the answer is: Stimultant
Consuming stimultant would increase the brain activity in your central nervous system. This would increase thee needs to seek source of excitements or other pleasurable activities, that could cause someone to have low attentions pan and disruptive behaviors.
Answer:
Nepotism is the practice among those with power or influence of favouring relatives or friends, especially by giving them jobs.
Favoritism is the practice of giving unfair preferential treatment to one person or group at the expense of another.
Idi Amin Dada was a violent dictator responsible for several atrocities during his reign.
Answer:
"The largest religion in Europe is Christianity, but irreligion and practical secularization are strong. Three countries in Southeastern Europe have Muslim majorities." 。゜(`Д´)゜。
brainiest?。◕‿‿◕。