The answer is: A. collecting data
During this process , researchers would use their observational skills and record every notable occurrence that happen to the variables.
The focus on this process is simply to add all relevant data without making any analyzation. That process come later on after the researchers started to change the variables in order to see whether it would create a correlation.
#1 the relationship between universes and galaxies is that galaxies are made up of universe. and the relationship between stars and solar systems is every solar system contains at least one star.
#2. galaxies form after several planets form rather close to each other.
#3. the last one I don't know
The answer is albedo. This, in Latin, means whiteness meaning the measure of diffuse reflection of
light of a surface. Albedo scale is 0 – 1 with 0 representing no reflection (black
body) while 1 represents a total
reflection of incident light. Albedo is
used in astronomy and climatology.
Prokaryotic cells have no nucleus.
Bacteria are an example of a prokaryotic cell.