Which statement is true?

opinions can be scientifically tested.
scientific theories are absolute and cannot be changed.
scientists have learned all they’ll ever know about science.
facts can be scientifically tested.

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Which step is not included in the step approach to calculating the greatest common divisor?