What must generalizations be backed by to be accepted in science?

Azygote becomes a mature adult through the process of: meiosis or mitosis

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Antoine manages a number of apartment buildings that use natural gas for heating, cooking, and laundry. the scatter plot shows the correlation between the outside air temperature and antoine's natural gas bill. which type of correlation does the plot illustrate?