Which of the following is part of the body’s immune system? Group of answer choices

macrophage

virus

pathogen

antibiotic

Pathogen

Explanation:

answer; i believe the correct answer is (progesterone);

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.