Is it multiple choice? I believe it's brain, but I could be wrong.
Answer:
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe.
or just mass.
The Law of Universal Gravitation states that the force of gravity acts between all objects in the universe that have mass.
Answer:
a population or community.
Explanation:
The term for blue skin caused by lack of oxygen is cyanosis. One is said to be cyanotic when presenting with this discoloration.