Which statement identify what astronomers currently know and think will happen with our universe

Which of the following is a physical property flammability heat of combustion solubility and toxicity

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

Which proportionality applies to avogadro’s law?