Japanese Tea Gardens are ceremonial spaces where a Zen practice involving a ritual tea service is performed. What is the name of the path used to transition visitors from the outside world into the ceremonial space and to spiritually prepare them for the ritual?

Explanation:

Japanese tea ceremony is a Japanese cultural activity.  It involves ceremonial preparation of green tea and presentation of powdered green tea.  It is called cha-no-yu in Japanese, It can be either formal or informal tea gahering.

 It is a course of hospitality involving tea, confections and light meal.  Informal gathering is called chakai while formal gathering is called chaji.  Chajji includes full course meal, thick and thin tea, confections.

Formal tea gathering can last upto four hours. Tea ceremony(Chado) is believed to be one of the three classic Japanese arts of refinement, other two are Kodo(Incense appretiation)  and kado (flower arrangement).

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

fertile good for trade etc