Pls help ASAP very thankful for your help.

Which statement about the stamps is correct?

The fact that the total amount of energy in a system remains constant is a(n)

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