Which component of blood protects us from invading foreign material? plasma erythrocytes thrombocytes leukocytes

Correct D). Leukocytes

Leukocytes also called as white blood cells are the cells of the immune system that are responsible for protecting the body from the invading pathogen and infectious disease.

The monocytes of leukocytes absorb large particles, granulocytes secrete chemicals or toxin for the infectious agent and the lymphocytes attack and kill bacteria and viruses that cause infections.

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

50% lit on the left side