Answer:
both tolerance and withdrawal.
Explanation:
Answer:
C. A fossil is any trace of prehistoric life
Explanation:
None of the other answer choices are reasonable enough to be true. I hope this can help you!
Because we have smelled them so long we are used to them
Answer:
Explanition:
The immune system is made up of special organs, cells and chemicals that fight infection (microbes). The main parts of the immune system are: white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow.
No they cant be mechanical because then something would have to generate their rays through the inventing of a machine.
