Answer:
Hi There! I'm new so I hope I get This Right! ^^
Explanation:
double blind test. the control group receives a placebo. Why is a placebo used in a double-blind test? so that the effects on people in two different groups can be compared.
happy To Help! ^^
I believe that it is liquid.
The answer is c hopefully I helped you
C.
jk dont do it hehehehe
Answer:
insulation packed around a hot water pipe
Explanation:
