Answer:
Using a control group means that any change in the dependent variable can be attributed to the independent variable.
Explanation:
I would go with B .
Hope this helps yaa!
In Russia, after the global financial crisis in 1998, Russia became a major exporter of grain after 2001.
<span>There were probably several, but it is a deadly sickness if not treated and the outbreak in the middle ages killed 1/3 of Europe. Some cures were weird things like eating crushed emeralds or drinking poison. Some symptoms included swollen lymph nodes and bleeding out in many places </span>
