Answer:
The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.
Information
The immune system protects the body from possibly harmful substances by recognizing and responding to antigens. Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens.
Your body's cells have proteins that are antigens. These include a group of antigens called HLA antigens. Your immune system learns to see these antigens as normal and usually does not react against them.
It means the completion or approval of a finished and definitive version of something.
The answer is D for e2020!!!(inscreasing conflict...) im taking the test rn im positive on this answer guys
Answer:
B
it dangerous because it can result in accidental punctures of the fingures or hand,which can lead to potential exposure to hazardeous chemicals
