What tools should a scientist use to measure an object in milligrams

Iknow #2 is d. i just need to know why

Adepositional also feature that forms where a stream enters a lake or an ocean is a

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