PLEASE ANSWER ASAP NEED ANSWER 75 POINTS Which statement about pure substances and molecules is correct?

A. Pure substances cannot be molecules.

B. All molecules are pure substances.

C. Molecules cannot be pure substances.

D. All pure substances are molecules.

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon