A gravitationally bound system multiple of stars and accompanying planets, moons, etc. -solar system
-nebula
-galaxy
-universe

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

How does the human body lever work?