Hepatitis b is a liver infection spread by sexual contact, sharing injecting equipment, close contact with someone who has hepatitis b or any contact with contaminated body fluids. you can prevent it with vaccines. Im assuming the nurse instructs the students to get vaccines?
Answer:
When the salt is added to the ice, the point of water freezing is lower, and the ice is melting.
Explanation:
The phenomenon of the salt melting the ice is called the depression of icing. The point is when we add the salt to the ice, the salt breaks water bounding molecules. This way salt is going to melt into ions and those ions are melting the ice.
In the real life, salt is also very useful, not only in chemistry. That is why people are putting salt on frozen roads, for example.
Electrical energy is energy derived from electric potential energy or kinetic energy. So D would be the best answer
A segment of DNA molecule found only in the body cells of organism
