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.
I believe that this would be deforestation because the trees' roots keep the soil in place whereas if they were gone the soil would be loose.
Spermicide has a failure rate of 28 percent
Answer:
Weakening of the bone
Explanation:
Weakening of the bone would be a negative consequence.