Answer:
Copernican Revolution, shift in the field of astronomy from a geocentric understanding of the universe, centred around Earth, to a heliocentric understanding, centred around the Sun, as articulated by the Polish astronomer Nicolaus Copernicus in the 16th century.
Explanation:
https://www.britannica.com/topic/Copernican-Revolution
Answer:
surviving of what they need
A clinical trail
Clinical trials are research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. These studies also may show which medical approaches work best for certain illnesses or groups of people. - Definition by <span>https://www.nhlbi.nih.gov/studies/clinicaltrials</span>
Answer:
In the U.S., a typical day of high school starts at about 7:30 a.m. and ends around 3:00 p.m., Monday to Friday. At other schools, students may take one set of classes Monday, Wednesday, and Friday, and a different set of classes on Tuesday and Thursday.
Explanation:
