Atype of dispersal in which individuals move out of a population, and decrease its size is called

What is called the "building block" of life?

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

Drag each label to the correct location. each label can be moved more than once match the properties with the subatomic particle