Answer:
The magnetic field of Earth is caused by currents of electricity that flow in the molten core. These currents are hundreds of miles wide and flow at thousands of miles per hour as the earth rotates. The powerful magnetic field passes out through the core of the earth, passes through the crust and enters space.
Answer:
A. Expulsion of fetus before 20th-28th week of gestation
Turning off the switch breaks the electrical current to the light - no supply of energy, the light goes off.
Passes laws to protect the environment
Answer:
B. The cells of the immune system.
Explanation:
HIV is called Human Immunodeficiency, meaning it weakens the human immune system.
