They are sources that you can find the date, author, and have real facts and not just made up. Like if you went to the IRS website then that is a credible source for tax where as going to Wiki they are not credible because anybody can go there
No, you always need to provide a citation.
Answer:
Experimental or treatment group
Explanation:
In science, researchers use different variables to test the cause or effect of a specific treatment or phenomena. These variables could be dependent or independent.
In these experiments, the control group refers to a group that does not receive any type of treatment or, in other words, does not receive any variable. On the other hand, the experimental group receives the treatment or variables and is the one that would show the results.
These two groups - control and experimental - are subsequently compared.
Satellites of soviet union
