The complement system is part of the innate immune system.
Answer:
oxygen
Explanation:
oxygen isn't necessarily a characteristic of life. it's more like an aspect of life
Answer:
vaccination
Explanation:
Vaccination also called immunization is the administration of antigenic material called a vaccine to produce active artificial immunity against a disease. Vaccination protects humans from infections of many diseases. Examples include tuberculosis poliomyelitis, whooping cough, diphtheria and measles.
Active artificial immunity is where antibodies are formed in response to administration of dead or weakened( attenuated) pathogens or chemically treated toxoids.
Answer:
<em>Magnetic Field</em>
Explanation:
The outer core of the Earth possesses molten iron. This core gives rise to convectional currents. The movement of the convectional currents gives rise to the electric currents which make up the magnetic field of the Earth. The magnetic field of the Earth is also known as the Earth's magnetosphere. This is the area which comprises of the magnetic field of the Earth caused due to the movement of ions inside the core of the Earth.
