Africa is south of europe
PowerPoint Presentation or Keynote: This is the most used presentation format. Almost everybody either using it from their own computer or getting it done from the PowerPoint designing agency. In fact usage of PPT & Keynote is so high that PPT or PowerPoint become a synonym of Presentation.
Answer:
federal system maintains close relationship between the government and the people because Federalism can eliminate the problems of the system, and in a federal system power is shared between the central government and state government. Similarly, people have the rights to choose the state and central government and they can vote for their candidates to run the governance.
Answer: This is a "CONTROLLED PLACEBO EXPERIMENT".
Explanation: A controlled placebo experiment is a type of research method that is used to check the effectiveness of a drug in a patient. This is done by selecting a sample group, then randomly divide the two group into a placebo group ( this are the group that will receive the drug treatment ) and the controlled group( these are the group that will receive a coloured mixture that looks like the drug, but does not have any effect). Without the groups knowledge about the real drugs and the coloured mixture, but are followed up and tested.
This is a controlled placebo experiment, because 400 student has been choosed as the sample, and are divided into a placebo group and a controlled group, to check the effectiveness of a drug on their memory.
