1. In the Gizmo, drag the apple onto the Scale. The scale measures mass. Mass is the amount of matter, or "stuff," in an object.
What is the apple's mass?
(Note: "g" stands for grams.)

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive