Answer:
The "natural" sciences reflect a secular, scientific worldview, while the "social" sciences are more humanistic and philosophical
Answer:
the obvious problem is that its not clean enough for international standard.
Explanation:
have international cleaning system can help.
Answer:
A double-blind study is one in which neither the participants nor the experimenters know who is receiving a particular treatment. This procedure is utilized to prevent bias in research results. Double-blind studies are particularly useful for preventing bias due to demand characteristics or the placebo effect.
For example, let's imagine that researchers are investigating the effects of a new drug. In a double-blind study, the researchers who interact with the participants would not know who was receiving the actual drug and who was receiving a placebo.