A.movement and protection
The equilibrium means that amount that are coming equals the amount that are going.
So the correct answers are
2. A person's income and expenses are equal every month.
3. The pressure exerted on the inside of a balloon by the gas inside is equal to the pressure exerted on the outside of the balloon by the atmosphere.
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Answer:
16
Explanation:
The proton number is always the number in the corner of the box on a periodic table
The Milky Way is a SBc barred spiral galaxy.
Answer:
The strength of electric force depends on the amount of electric charge on the particles and the distance between them. Larger charges or shorter distances result in greater force.
Explanation:
