Answer: Double blind clinical trial
Explanation:
The situation that is seen here is double blind clinical trail in which neither the participant nor the practitioner knows who is receiving the treatment.
This is used to prevent biasing in the experiment which is caused due to demand characteristics or placebo effect.
Here, in this situation the dog handlers and the experimental observer both were blinded to identify the breath sample.
Explanation:
persistence is a personality trait. And for the what do you wonder YOU have to answer about what you wonder about it and what did you learn from it
Answer:
compaction and cementation just did it
Explanation:
