Answer:
Prior to more stringent blood safety measures and more sensitive tests, HIV from infected blood donors made its way into blood products. From the late 1970s to the mid-1980s, about half of all people with hemophilia became infected with HIV after using contaminated blood products.
Answer: d. double-blind
Explanation:
A double blind study can be define as the study in which both the researcher and participant do not know which participant is receiving a particular treatment. This method is useful as it prevents the bias in the results of the experiment.
The given situation is the example of double-blind study. Here, the participants as well as the researcher do not know which group of subject are receiving bacteria in the yogurt and which group is not receiving.
Dear mayor.
I write this letter as a way to ask for measures for an evil that is plaguing our youth, drug abuse.
This abuse of drugs has been gradually increasing in our community and in other regions that are impacted by an insufficient economy and a flawed educational system, which has meant that young people find support only in the world of drugs.
The problem is that these substances are highly addictive, reaching the point where young people are unable to continue their lives, as they can only maintain their addiction. This opens the way for criminal and dangerous activities to be initiated, causing young people to lose their entire lives.
Therefore, I humbly ask that public policies be created to save our young people from this situation, in addition to regulatory policies for the use and sale of drugs. I believe that you will agree with the importance and urgency of this matter.
Thank you for your time.
Graciously.
M. Linn.
The answer is Violent conflicts
