Which event took place during the Copernican revolution, when most people started to believe in a heliocentric model of the solar system? A. Aristotle developed his model of the solar system.
B. Copernicus rediscovered Aristarchus’s heliocentric model.
C. laws of planetary motion.
D. Newton’s theories of gravity were dismissed and considered invalid.

In which of the following is positive work done by a person on a suitcase

During the past 150 years in the united states, how did energy consumption compare to population growth

Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. the researchers grew one type of bacteria in twenty-four identical covered petri dishes. then, they opened eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. they left the remaining six petri dishes closed as a control group. when the researchers measured the growth of bacteria two days later, the six dishes that had no hand sanitizer showed the least amount of bacterial growth. the researchers concluded that not using any hand sanitizer would lead to the least bacterial growth. which statement best explains why the researchers’ conclusion was not justified? the experiment tested too many variables. the control group was not treated the same as the experimental group. the sample size of twenty-four petri dishes is not large enough. the single type of bacteria is not adequate to make any conclusions.